The mean and standard deviation are used to compare the centers and ranges of two symmetric distributions because they provide a measure of position and variability that are consistent with normally distributed data.
When the data are approximately normal, the mean is a good measure of the center of the distribution, and the standard deviation is a good measure of the spread of the distribution.
By comparing the means and standard deviations of two symmetric distributions, we can know their similarity or difference in terms of central tendency and variability.
On the other hand, a five-digit summary (minimum, Q1, mean, Q3, maximum) is used to compare the center and difference of two skewed or outlier distributions.
The five-digit summary provides a way to summarize the key characteristics of a distribution, and it is more robust for outliers than for mean and standard deviation.
By comparing the median and interquartile range (IQR) of two skewed or outlier distributions, we can tell their similarities or differences in terms of central tendency and variability.
In summary, mean and standard deviation are suitable for comparing centers and ranges of normally distributed data, while five-digit summaries are more suitable for comparing centers and ranges of skewed distributions.
learn more about standard deviation
brainly.com/question/23907081
#SPJ4
Paul and Greg each draw a triangle with one side of 3cm, one
side of 9cm and one side of 10cm. Greg says its trangle must
be congrent is Greg correct?
Step-by-step explanation:
Yes they are congruent via the S-S-S triangle theorem.
triangles are congruent if they have three equal sides ( Side-Side-Side)
about a third (33%) of american men feel that, in general, people can be trusted. is it different for american women? in 2014, the general social survey asked its participants: generally speaking, would you say that most people can be trusted or that you can't be too careful in dealing with people? out of 929 women sampled, 259 said most people can be trusted.
The hypotheses being tested are: H0: p = 0.33 versus Ha: p > 0.33.
The test statistic is 1.51.
The p-value is 0.131.
So we have no statistically significant evidence that the population proportion of American women in 2014 who say people can be trusted is different from the proportion of men who feel the same. The p-value of 0.131 is greater than the commonly used alpha level of 0.05, which means that we fail to reject the null hypothesis. However, we cannot conclude that the proportions are equal, only that we do not have enough evidence to say that they are different.
The General Social Survey asked 929 American women in 2014 whether they thought people can be trusted or whether they cannot be too careful in dealing with people. Out of the 929 women sampled, 259 said that most people can be trusted. The hypotheses being tested are whether the proportion of American women who say people can be trusted is different from the proportion of men who feel the same (33%). The null hypothesis (H0) is that the proportion of American women who say people can be trusted is 0.33, while the alternative hypothesis (Ha) is that it is greater than 0.33.
The test statistic for this hypothesis test is 1.51, which is calculated using the sample proportion of women who say people can be trusted (0.28), the hypothesized proportion of men who feel the same (0.33), and the standard error of the sampling distribution. The p-value of the test is 0.131, which is the probability of getting a sample proportion as extreme or more extreme than the observed proportion of 0.28, assuming that the null hypothesis is true.
Since the p-value of 0.131 is greater than the commonly used alpha level of 0.05, we fail to reject the null hypothesis. Therefore, we do not have enough statistical evidence to conclude that the proportion of American women who say people can be trusted is different from the proportion of men who feel the same. However, we cannot conclude that the proportions are equal, only that we do not have enough evidence to say that they are different.
To know more on hypothesis
https://brainly.com/question/31319397
#SPJ4
--The question is incomplete, answering to the question below--
"About a third (33%) of American men feel that, in general, people can be trusted. Is it different for American women? In 2014, the General Social Survey asked its participants: Generally speaking, would you say that most people can be trusted or that you can't be too careful in dealing with people? Out of 929 women sampled, 259 said most people can be trusted.
The hypotheses being tested are: H0: p = 0.33 versus Ha: p [ Select ] ["not =", ">", "<"] 0.33
The test statistic is [ Select ] ["-3.31", "0.279", "-1.51"]
The p-value is [ Select ] ["0.9995", "0.0005", "0.002", "0.001"]
So we have [ Select ] ["very strong", "strong", "some", "no"] statistically significant evidence that the [ Select ] ["population proportion", "sample proportion"] of American women in 2014 who say people can be trusted is different from the proportion of men who feel the same."
Hey does anyone know the answer to this assignment ?
According to the Side-Angle-Side Theorem, the triangles JKL and XYZ are congruent because KL XV, JK VZ, and K V.
What is congruent triangles?Congruent triangles are two triangles that have the same size and shape. They have exactly the same angles and sides. Congruent triangles can be used to prove theorems in geometry, such as the side-angle-side (SAS) theorem and the angle-side-angle (ASA) theorem. Congruence can also be used to find the unknown side length of a triangle when two sides and an angle are known.
How to demonstrate the congruence of two triangles
This is a congruency issue in which we must demonstrate the congruence of two triangles. If two triangles have the same sides in the same order, they are said to be congruent. According to the figure, we discover the following presumptions:
KL XV, JK XV, and K XV
According to the Side-Angle-Side Theorem, which is satisfied by these presumptions, the triangles JKL and XYZ.
To know more about congruent triangles click-
http://brainly.com/question/22062407
#SPJ1
yes both triangles BDC and PNO are congruent by AAS congruency.
What is congruent triangles?Congruent triangles are two triangles that have the same size and shape. They have exactly the same angles and sides. Congruent triangles can be used to prove theorems in geometry, such as the side-angle-side (SAS) theorem and the angle-side-angle (ASA) theorem and the angle-angle-side Congruence can also be used to find the unknown side length of a triangle when two sides and an angle are known.
to demonstrate the AAS congruency of two triangles
for two angles and a non-included side in one triangle are congruent to two angles and the corresponding non-included side in another triangle, then the triangles are congruent.
in triangles BDC and PNO
given that
BD=PN
∠CBD=∠OPN
∠BCD=∠PON
According to the Angle -side -Angle Theorem, which is satisfied by these presumptions, the triangles BDC and PNO
To know more about congruent triangles click-
brainly.com/question/22062407
#SPJ1
Which data set could be used to create the box plot below
the correct answers are:=4, 11, 8, 12, 1, 6, 14 and 14, 10, 6, 9, 11, 8, 1 for the given data
How to solve the data
The box plot represents the distribution of a dataset using quartiles, median, and outliers. In order to create a box plot, we need to have a dataset with numerical values. Based on the options given, the data sets that can be used to create the box plot are:
4, 11, 8, 12, 1, 6, 14: This data set has all the required numerical values to create a box plot. It contains 7 values which are within the range of values shown on the x-axis of the box plot.
14, 10, 6, 9, 11, 8, 1: This data set also contains all the required numerical values to create a box plot. It has 7 values which are within the range of values shown on the x-axis of the box plot.
The remaining data sets listed are either non-numerical or do not contain values within the range shown on the x-axis. Therefore, they cannot be used to create the box plot.
In summary, the correct answers are:
4, 11, 8, 12, 1, 6, 14
14, 10, 6, 9, 11, 8, 1
To know more about data visit :-
https://brainly.com/question/26711803
#SPJ1
Underwater pressure consists of atmospheric pressure, which is
101
101101 kilopascals
(
kPa
)
(kPa)left parenthesis, start text, k, P, a, end text, right parenthesis, plus
101
kPa
101kPa101, start text, k, P, a, end text of hydrostatic pressure for every
10
1010 meters
(
m
)
(m)left parenthesis, start text, m, end text, right parenthesis of depth under water. Which inequality best represents the depth,
d
dd, in meters, that is permitted for a scuba diver who is advised not to exceed
220
kPa
220kPa220, start text, k, P, a, end text of underwater pressure?
The inequality representing the maximum depth permitted for a scuba diver is:
d < 11 meters
To find the inequality representing the maximum depth permitted for a scuba diver, we need to set up an inequality with underwater pressure (consisting of atmospheric pressure and hydrostatic pressure).
Underwater pressure is given by the equation:
Underwater Pressure = Atmospheric Pressure + Hydrostatic Pressure
where:
Atmospheric Pressure = 101 kPa
Hydrostatic Pressure = 101 kPa for every 10 meters of depth (101 kPa/10 m = 10.1 kPa/m)
Depth = d meters
Now, we know the maximum underwater pressure for the scuba diver is 220 kPa.
So, we set up the inequality:
220 kPa > 101 kPa + 10.1 kPa/m * d
Now, we need to solve for d:
220 kPa - 101 kPa > 10.1 kPa/m * d
119 kPa > 10.1 kPa/m * d
Now, divide both sides by 10.1 kPa/m:
119 kPa / 10.1 kPa/m > d
11.7821782... > d
Since we are finding the depth, we can round down to the nearest whole number:
11 > d
For similar question on depth.
https://brainly.com/question/25105338
#SPJ11
Question: Underwater pressure consists of atmospheric pressure, which is 101 kilopascals (kPa), plus 101 kPa of hydrostatic pressure for every 10 meters (m) of depth under water. Which inequality best represents the depth, d, in meters, that is permitted for a scuba diver who is advised not to exceed 220 kPa of underwater pressure?
101+ 101d≤ 220
101+10.1d ≤ 220
101+10.1d> 220
4
101+101d> 220
1. a triangle with side lengths of 9, 12 and 15 is a right triangle by the converse of pythagorean theorem. what are the measures of the acute angles of the triangle?
The required measures of the acute angles in the given right triangle with side lengths 9, 12, and 15 is equal to 36.87 degrees and 53.13 degrees approximately.
Right triangle with side lengths of 9, 12 and 15.
Check whether Pythagorean theorem holds true,
which states that the sum of the squares of the two shorter sides equals the square of the hypotenuse.
9^2 + 12^2 = 15^2
Simplifying this equation, we get,
⇒81 + 144 = 225
⇒225 = 225
This implies,
Pythagorean theorem holds for this triangle,
And by the converse of the Pythagorean theorem,
Triangle is a right triangle with the right angle opposite the side with length 15.
The acute angles of a right triangle are complementary.
Which means that their sum is 90 degrees.
Calculate the measures of the acute angles in this triangle,
Use trigonometric functions.
Use the sine function to find one of the acute angles,
sin(θ) = opposite/hypotenuse
= 9/15
= 0.6
Taking the inverse sine function of both sides, we get,
θ = sin^(-1)(0.6)
⇒ θ ≈ 36.87 degrees.
Sum of the acute angles is 90 degrees, the other acute angle is equals to,
90 - 36.87 = 53.13 degrees.
Therefore, the measures of the acute angles of the triangle are approximately 36.87 degrees and 53.13 degrees.
learn more about triangle here
brainly.com/question/29369234
#SPJ4
the height of seaweed of all plants in a body of water are normally distributed with a mean of 10 cm and a standard deviation of 2 cm. use a calculator to find which length separates the lowest 30% of the means of the plant heights in a sampling distribution of sample size 15 from the highest 70%? round your answer to two decimal places.
The length that separates the lowest 30% of the means from the highest 70% is between 9.74 cm and 10.26 cm
How to find the length that separates the lowest 30% of the means from the highest 70%?The mean of the sampling distribution of the mean for a sample size of 15 will also be 10 cm (since the population mean is 10 cm). The standard deviation of the sampling distribution will be:
standard deviation = population standard deviation / sqrt(sample size)
standard deviation = 2 cm / sqrt(15)
standard deviation ≈ 0.5164 cm
We want to find the length that separates the lowest 30% of the means from the highest 70%. We can use the z-score formula to find the corresponding z-scores for these percentiles:
z = (x - μ) / σ
For the lowest 30%, we want to find the z-score that corresponds to a cumulative probability of 0.3. Using a standard normal distribution table or calculator, we can find that this is approximately -0.5244.
-0.5244 = (x - 10) / 0.5164
Solving for x, we get:
x = 9.74 cm
Similarly, for the highest 70%, we want to find the z-score that corresponds to a cumulative probability of 0.7, which is approximately 0.5244.
0.5244 = (x - 10) / 0.5164
Solving for x, we get:
x = 10.26 cm
Therefore, the length that separates the lowest 30% of the means from the highest 70% is between 9.74 cm and 10.26 cm, inclusive.
Learn more about normal distribution
brainly.com/question/29509087
#SPJ11
5y > 30 slove each inequality
Answer:
y>6
Step-by-step explanation:
5y>30
y>6
therefore, y can be any number that is larger than 6 (e.g. 7, 10 etc)
Find the time required for an investment of 5000 dollars to grow to 7200 dollars at an interest rate of 7.5 percent per year, compounded quarterly
the time required for an investment of $5000 to grow to $[tex]7200[/tex] at an interest rate of [tex]7.5[/tex] percent per year, compounded quarterly, is approximately [tex]3.79[/tex] years.
What is the required for an investment?o find the time required for an investment of $5000 to grow to $7200 at an interest rate of 7.5 percent per year, compounded quarterly, we can use the formula for compound interest:
[tex]A = P(1 + r/n)^(nt)[/tex]
where:
A = the final amount (in this case, $7200)
P = the principal amount (in this case, $5000)
r = the annual interest rate (in decimal form, so 7.5% = 0.075)
n = the number of times the interest is compounded per year (in this case, quarterly, so n = 4)
t = the number of years (which we need to find)
Plugging in the values, we get:
[tex]7200 = 5000(1 + 0.075/4)^(4t)[/tex]
Now we can solve for t by isolating it on one side of the equation.
Dividing both sides by 5000:
Taking the natural logarithm of both sides:
[tex]ln(7200/5000) = ln((1 + 0.075/4)^(4t))[/tex]
Using the property of logarithms that ln(a^b) = b * ln(a):
[tex]ln(7200/5000) = 4t\times ln(1 + 0.075/4)[/tex]
Dividing both sides by [tex]4 \times ln(1 + 0.075/4):[/tex]
[tex]t = ln(7200/5000) / (4 * ln(1 + 0.075/4))[/tex]
Using a calculator, we can find the value of t to be approximately 3.79 years (rounded to two decimal places).
Therefore, the time required for an investment of $5000 to grow to $7200 at an interest rate of 7.5 percent per year, compounded quarterly, is approximately 3.79 years.
Learn more about investment here:
https://brainly.com/question/15353704
#SPJ1
liz has two children. the shorter child is a boy. what is the probability that the other child is a boy? assume that in 89% of families consisting of one son and one daughter the son is taller than the daughter.
The probability that the other child is a boy given that the shorter child is a boy is approximately 0.56 or 56%.
The problem can be solved using Bayes' theorem, which states that:
P(A|B) = P(B|A) * P(A) / P(B)
where A and B are events, P(A|B) is the conditional probability of event A given event B has occurred, P(B|A) is the conditional probability of event B given event A has occurred, P(A) is the prior probability of event A, and P(B) is the prior probability of event B.
Let A be the event that both children are boys, and B be the event that the shorter child is a boy. We are given that P(B|A') = 1/2, since the gender of the taller child is equally likely to be a boy or a girl.
We are also given that P(A') = 3/4, since there are three equally likely possibilities for the gender of the two children: boy-girl, girl-boy, and girl-girl. Finally, we are given that in 89% of families consisting of one son and one daughter the son is taller than the daughter, which means that P(B|A) = 0.89.
Using Bayes' theorem, we can calculate the probability that the other child is a boy given that the shorter child is a boy:
P(A|B) = P(B|A) * P(A) / P(B)
= 0.89 * (1/4) / [(1/2) * (3/4) + 0.89 * (1/4)]
≈ 0.56
To learn more about probability click on,
https://brainly.com/question/12629667
#SPJ4
NEED STEP BY STEP ASAP DUE AT 9:00
The equation of the given circle is expressed as: x² + y² - 24x + 14y + 112 = 0
How to find the equation of a circle?The standard form of expression for the equation of a circle is expressed as:
(x - h)² + (y - k)² = r²
where:
(h, k) are coordinates of the center of the circle
r is radius
We are given the parameters:
Coordinates of center = (12, -7)
Diameter = 18
Radius = 18/2 = 9
Thus, equation of circle is:
(x - 12)² + (y - (-7))² = 9²
x² - 24x + 144 + y² + 14y + 49 = 81
x² + y² - 24x + 14y + 112 = 0
Read more about Equation of a circle at: https://brainly.com/question/1559324
#SPJ1
If [tex]\frac{1}{a}:\frac{1}{b}:\frac{1}{c}=3:4:5[/tex], then [tex]a:b:c[/tex]
The calculated solution for the ratio given as a : b : c is 1/3 : 1/4 : 1/5
How to evaluate the ratioFrom the question, we have the following parameters that can be used in our computation:
1/a : 1/b : 1/c = 3 : 4 : 5
Take the inverse of both sides
So, we have
a : b : c = 1/3 : 1/4 : 1/5
The above means that the solution for a : b : c is 1/3 : 1/4 : 1/5
Read more about ratio at
https://brainly.com/question/12024093
#SPJ1
How to compare the following ratios
17:23 and 5:9
To compare the ratios 17:23 and 5:9, you can do it by either finding their decimal equivalents or by cross-multiplying.
Finding decimal equivalents:
Divide each part of the ratio by the sum of its parts.
For 17:23:
17 ÷ (17+23) = 17 ÷ 40 = 0.425
For 5:9:
5 ÷ (5+9) = 5 ÷ 14 = 0.3571
Now compare the decimals:
0.425 > 0.3571
So, the ratio 17:23 is greater than 5:9.
Cross-multiplying:
Cross-multiply the two ratios and compare the products.
For 17:23 and 5:9, multiply 17 by 9 and 23 by 5:
17 * 9 = 153
23 * 5 = 115
Now compare the products:
153 > 115
So, the ratio 17:23 is greater than 5:9.
In both methods, the result is the same: 17:23 is greater than 5:9.
the radius of a circle is 3 miles. what is the circumference? give the exact answer in simplest form.
Answer:
18.84 miles
Step-by-step explanation:
Circumference = 2πr
= 2 × 3.14 × 3
= 18.84 miles
The exact circumference of the circle with radius 3 miles is 6π or 18.84 miles (approx).
The radius of a circle is 3 miles. What is the circumference?The formula to calculate the circumference of a circle is given as:
Circumference = 2πr, where r is the radius of the circle and π is a constant value, approximately equal to 3.14. Substituting the given value of r in the formula, we have:
Circumference = 2π(3)
Circumference = 6π
Therefore, the exact circumference of the circle is 6π miles. To simplify this answer in its simplest form, we can use the value of π as 3.14 (approximately).Circumference = 6π = 6(3.14) = 18.84Therefore, the exact circumference of the circle is 18.84 miles (approx).
for more questions on circumference
https://brainly.com/question/12823137
#SPJ11
the driver of a car completes a trip. the graph displays data about the car's motion during the trip. which of the following statements about the car's motion is true? responses the total time for the car trip was 50 minutes. the total time for the car trip was 50 minutes. the car did not slow down during the trip. the car did not slow down during the trip. the car returned to where it had started the trip at the end of the trip. the car returned to where it had started the trip at the end of the trip. the car did not travel at a constant speed during the entire trip. the car did not travel at a constant speed during the entire trip. skip to navigation highlight previous 1, fully attempted. 2, fully attempted. 3, fully attempted. 4, unattempted. 5, unattempted. 6, unattempted. 7, unattempted. 8, unattempted. 9, unattempted. 10, unattempted.next auto saved at: 10:49:59
The car did not travel at a constant speed during the entire trip. Option d is the correct choice.
Option d is the correct answer. The graph shows that the car's velocity is not constant during the trip, indicating that the car did not travel at a constant speed. The car changes its velocity multiple times, which means it either speeds up, slows down or changes direction. Therefore, the car did not travel at a constant speed during the entire trip.
Option a is incorrect because the graph doesn't provide any information about the total time of the trip. Option b is incorrect because the graph clearly shows that the car slows down multiple times during the trip. Option c is also incorrect because the graph doesn't indicate that the car returned to its starting point.
To know more about graph, here
brainly.com/question/12127911
#SPJ4
--The complete question is, The driver of a car completes a trip. the graph displays data about the car's motion during the trip. which of the following statements about the car's motion is true?
a. the total time for the car trip was 50 minutes.
b. the car did not slow down during the trip.
c. the car returned to where it had started the trip at the end of the trip.
d. the car did not travel at a constant speed during the entire trip.--
NEED HELP DUE TODAY WELL WRITTEN ANSWERS ONLY!!!!
Here is a graph of the equation y = 2sin(Θ) - 3. Use the graph to find the amplitude of this sine equation.
The answer of the given question based on the graph is the amplitude of the given sin equation is 2.
What is Amplitude?Amplitude refers to the maximum displacement of a wave from its equilibrium or rest position. It is a characteristic of a wave that measures the magnitude or strength of its oscillations or vibrations. The amplitude refers to the distance from the midline (or average value) of the function to its maximum or minimum value. The amplitude is a positive value, and it is half the distance between the maximum and minimum values of the function.
In this case, we can see from the graph that the midline of the function is y = -3, which is the value of the function when sin(Θ) = 0 (since 2sin(Θ) - 3 = 2(0) - 3 = -3).
The maximum value of the function occurs when sin(Θ) = 1 (since the maximum value of sin(Θ) is 1), so the maximum value of 2sin(Θ) is 2. Therefore, the maximum value of 2sin(Θ) - 3 is 2 - 3 = -1.
The distance from the midline (-3) to the maximum value (-1) is 2 units, so the amplitude of the sine function y = 2sin(Θ) - 3 is 2.
Therefore, the amplitude of the given sin equation is 2.
To know more about Equation visit:
https://brainly.com/question/9312365
#SPJ1
Please im low on points and I need this it is timed.
Answer:
25% off
Step-by-step explanation:
Answer It’s Save 20$, cause if u buy Something More then 88$ U could 20% off which the new price will be 68$ (to make sure Take 88 from 20 Which will prob be 68) but 68$ would be the new price if Lacey Picked the “Save $20 one purchased Of $75 or more”
Step-by-step explanation hope this helps
the following table is based off a survey of employment from 2018. what is the p-value for testing if the proportion who are unemployed differs between the two groups? give your answer to three decimal places.
The p-value for testing if the proportion who are unemployed differs between the two groups is 0.
To calculate the p-value for testing if the proportion who are unemployed differs between the two groups, we can use a two-sample test of proportions
Let's define
Group 1: High School or Some College
Group 2: Bachelor's or Higher
We want to test if the proportion of unemployed individuals differs between Group 1 and Group 2.
First, we need to calculate the proportion of unemployed individuals in each group
Group 1: 41/601 = 0.06822
Group 2: 14/875 = 0.016
Next, we need to calculate the pooled proportion
Pooled proportion = (41 + 14) / (601 + 875) = 0.043
Now we can calculate the test statistic
Test statistic = (0.06822 - 0.016) / sqrt(0.043 × (1 - 0.043) × (1/601 + 1/875)) = 7.57
Using a two-tailed test with a significance level of 0.05, we can find the critical value from a normal distribution table or calculator. For a two-tailed test with a significance level of 0.05, the critical value is approximately 1.96.
Since the test statistic (7.57) is greater than the critical value (1.96), we reject the null hypothesis that the proportion of unemployed individuals is the same in both groups.
Finally, we can calculate the p-value as the probability of getting a test statistic as extreme or more extreme than the one we observed, assuming the null hypothesis is true. Since this is a two-tailed test, we need to double the area to the right of the test statistic (7.57) under the standard normal curve
p-value = 2 × P(Z > 7.57) = 0
Learn more about p-value here
brainly.com/question/14790912
#SPJ4
The given question is incomplete, the complete question is:
The following table is based off a survey of employment from 2018. What is the p- value for testing if the proportion who are unemployed differs between the two groups? Give your answer to three decimal places. Total Unemployed 41 Employed 834 875 High School or Some College Bachelor's or Higher Total 14 587 601 55 1421 1476
Ella went shopping with her mother they bought 3 pounds of bananas if each nana weighs 6 ounces how many bananas did they buy
Answer:
Ella and her mother bought 8 bananas.
Step-by-step explanation:
There are 16 ounces in 1 pound, so 3 pounds is equal to 3 x 16 = 48 ounces.
If each banana weighs 6 ounces, then they bought 48/6 = 8 bananas.
Answer:
8 Bananas
Step-by-step explanation:
Well for starters we know that 1 pound = 16 ounces, and Ella's mother bought 3 pounds of bananas which is equal to 48 ounces. If each Banana is 6 ounces we simply use the equation of 48/6 = x, and with simple maths we can find that x = 8
100 POINTS PLEASE HURRY
The image of a composite figure is shown.
A four-sided shape with the bottom side labeled as 17.4 yards. The height is labeled 6 yards. A portion of the top side from the perpendicular to right vertex is labeled 2.1 yards. The portion of the top from the perpendicular to the left vertex is 15.3 yards.
What is the area of the figure?
91.8 yd2
104.4 yd2
117 yd2
219.24 yd2
The height divides the shape into 2 parts : a trapezoid and a right-angled triangle.
A(trapezoid) = [(a+b)h]/2, where a;b;h are the length, width and height respectively.
-> A(trapezoid) = [(15.3+17.4) x 6]/2 = 98.1 (yd2)
A(triangle) = lh/2, where l is the base.
-> A(triangle) = 2.1 x 6 : 2 = 6.3 (yd2)
So, the area of the figure is 98.1 + 6.3 = 104.4 (yd2)
2nd one what is the size of angle b??
Answer:
64°
Step-by-step explanation:
Given:
A complete angle is 360 degrees
A complete angle is 360 degreesOne right angle (90 degrees)
A complete angle is 360 degreesOne right angle (90 degrees)An angle of 154 degrees
A complete angle is 360 degreesOne right angle (90 degrees)An angle of 154 degreesTwo cross angles that are equal
Find: ∠b - ?
.
First, let's find the size of the smaller cross angles:
180° - 154° = 26°
Since there's two of them, we have to multiply this number by 2:
26° × 2 = 52°
Now, we can find ∠b:
∠b = 360° - 90° - 154° - 52° = 64°
Point b has corrdinates (5,1) the x coordinates of point a is -4 the distance between point a and point b is 15 units what are the possible coordinates of point a
The possible coordinates of the point a is (-4, 11.06) and (-4, -9.06).
Given that point, b has coordinates (5,1) and the distance between point a and point b is 15 units, we can use the distance formula to find the possible coordinates of point a.
The distance formula is given by:
distance = [tex]\sqrt({x_{2}-x_{1 })^{2} } +\sqrt({y_{2}-y_{1 })^{2}[/tex]
If we replace with the point b's coordinates, we obtain:
15 = [tex]\sqrt({5}-(-4)})^{2} } +\sqrt({1-y_{1 })^{2}[/tex]
Simplifying the equation, we get:
225 = [tex](9 + y_{1} ^{2} - 2y_{1} )[/tex]
Rearranging and solving for y1, we get:
y₁² - 2y₁ - 216 = 0
Using the quadratic formula, we get:
y₁ = 11.06
y₁ = -9.06
To learn more about coordinates follow the link:
https://brainly.com/question/16634867
#SPJ1
an international calling plan charges 45 cents per minute or fraction of a minute for each call. what is the cost for making a 5 minute call? 225 cents 450 cents 270 cents 235 cents
Therefore, the answer is 225 cents.
When an international calling plan charges 45 cents per minute or fraction of a minute for each call, the cost for making a 5-minute call is 225 cents.What is an international calling plan?
An international calling plan is a type of phone plan that allows people to make calls to other countries at lower rates than they would normally be charged. The cost of a call will vary depending on the country and the duration of the call. The per-minute rate may be used to calculate the cost of making an international call when an international calling plan charges 45 cents per minute or fraction of a minute for each call.
If a 5-minute call is made under the given circumstances, the cost of the call will be[tex] 5 x 45 = 225 [/tex]cents.
for such more questions on fractions
https://brainly.com/question/78672
#SPJ11
Which expression is equivalent to 9t+4t?
9t + 4t can be simplified by combining the like terms (terms with the same variable and exponent). The coefficients of the two terms (9 and 4) are added to get the coefficient of the simplified term:
9t + 4t = (9 + 4)t = 13t
Therefore, the expression that is equivalent to 9t + 4t is 13t.
to measure potential visitor exposure to possible sources of legionella, a questionnaire and a map of the site was sent to a randomized group of 220 people who had visited the exhibition. a respondent was categorized as a case (n
The odds ratio was for each factor in the table are 2.32, 6.67, 1.64, 1.33, 2.43, 2.33, 1.75 and 8.33 respectively, and the factor with the highest odds ratio is "Pausing at steam iron in hall 4," suggesting that it is the most likely responsible for the outbreak.
To calculate the odds ratio, we need to divide the number of cases with a specific factor by the number of controls with that same factor and then divide that result by the number of cases without that factor divided by the number of controls without that factor. For example, to calculate the odds ratio for pausing at the whirlpool spa in hall 3, we would do:
Odds ratio = (41/101)/(21/119) = 2.32
Using the same formula for the other factors, we get:
Underlying disease: 6.67
A smoker: 1.64
Total hours at exhibition: 1.33
Pausing at bubblemat in hall 3: 2.43
Pausing at electric kettle in hall 3: 2.33
Pausing at whirlpool in hall 4: 1.75
Pausing at steam iron in hall 4: 8.33
Based on these odds ratios, the factor most likely responsible for the outbreak is pausing at the steam iron in hall 4, as it has the highest odds ratio of all the factors considered.
To know more about odds ratios:
https://brainly.com/question/28478631
#SPJ4
--The given question is incomplete, the complete question is given
" To measure potential visitor exposure to possible sources of Legionella, a questionnaire and a map of the site was sent to a randomized group of 220 people who had visited the exhibition. A respondent was categorized as a case (n=101) if they had symptoms of a respiratory infection within 20 days of their visit to the exhibition.
Study Population
Cases (n=101)
Controls (n=119)
Male
63
45
Underlying disease
11
2
A smoker
42
31
Total hours at exhibition
4
3
Pausing at whirlpool spa in hall 3
41
21
Pausing at bubblemat in hall 3
37
17
Pausing at electric kettle in hall 3
26
12
Pausing at whirlpool in hall 4
31
20
Pausing at steam iron in hall 4
16
3
Calculate the Odds Ratio for each of the factors considered in Table 2. (You must do this calculation for each factor, but you only need to provide an example calculation for one of them.)
If a larger odds ratio indicates a higher probability that a given factor is the causative mechanism for disease transfer (e.g., the source) which of the last five factors is most likely responsible for the outbreak? "--
food inspectors inspect samples of food products to see if they are safe. this can be thought of as a hypothesis test with the following hypotheses. : the food is safe. : the food is not safe. is the following statement a type i or type ii error? the sample suggests that the food is safe, but it actually is not safe.
This leads to the incorrect conclusion that the food is safe for consumption when it is actually not.
A food inspector's job is to inspect samples of food products to determine if they are safe for consumption. In this context, we can consider this process as a hypothesis test with the following hypotheses:
Null hypothesis (H0): The food is safe.
Alternative hypothesis (H1): The food is not safe.
The statement given - "The sample suggests that the food is safe, but it actually is not safe" - describes a situation where the food inspector incorrectly concludes that the food is safe when it is not. This is an example of an error in hypothesis testing.
There are two types of errors in hypothesis testing: Type I and Type II.
Type I error occurs when the null hypothesis is rejected when it is actually true. In other words, a Type I error leads to the false conclusion that the food is not safe when it actually is safe.
Type II error occurs when the null hypothesis is not rejected when it is actually false. In this case, a Type II error results in the false conclusion that the food is safe when it actually is not safe.
Given the statement, "The sample suggests that the food is safe, but it actually is not safe," we can determine that this is an example of a Type II error. The food inspector failed to reject the null hypothesis (that the food is safe) when it was, in fact, false.
for such more questions on inspect samples
https://brainly.com/question/15992172
#SPJ11
how many integers between 100 and 999, inclusive, have the property that some permutation of its digits is a multiple of 11 between 100 and 999? for example, both 121 and 211 have this property. (2017amc10a problem 25) (a) 226 (b) 243 (c) 270 (d) 469 (e)
226 integers are present between 100 and 999, inclusive, and have the property that some permutation of its digits is a multiple of 11 between 100 and 999. Hence, option A is the correct option.
The problem statement is to find the number of multiples of 11 between 100 and 999 inclusive, where some multiples may have digits repeated twice and some may not.
To solve this problem, we can first count the number of multiples of 11 between 100 and 999 inclusive, which is 81. Some of these multiples may have digits repeated twice, and each of these can be arranged in 3 permutations. Other multiples of 11 have no repeated digits, and each of these can be arranged in 6 permutations. However, we must account for the fact that switching the hundreds and units digits of these multiples also yields a multiple of 11, so we must divide by 2, giving us 3 permutations for each of these multiples.
Thus, we have a total of 81 × 3 = 243 permutations. However, we have overcounted because some multiples of 11 have 0 as a digit. Since 0 cannot be the digit of the hundreds place, we must subtract a permutation for each of these multiples. There are 9 such multiples (110, 220, 330, ..., 990), yielding 9 extra permutations. Additionally, there are 8 multiples (209, 308, 407, ..., 902) that also have 0 as a digit, yielding 8 more permutations.
Therefore, we must subtract these 17 extra permutations from the total of 243, giving us 226 permutations in total. Hence, option A is the correct option.
Learn more about permutations on
https://brainly.com/question/30649574
#SPJ4
find the probability that the proportion of the sampled adults who drink coffee daily is between 0.59 and 0.67
a) The probability that more than 64% of the sampled adults drinks coffee daily is equals to the 0.2574.
b) The probability that the sample proportion of the sampled adults who drink coffee daily is between 0.59 and 0.67 is equals to the 0.2316.
We have a report data of National Coffee Association related to coffee drinking by adults. Sample proportion that adults drink coffee daily, p = 61% = 0.61
1 - p = 1 - 0.61 = 0.39
A random sample of sample size, n
= 250.
Population proportion= Sample proportion, p = 0.61
So, mean for population, μₚ = population proportion = 0.61
Standard deviations for population is σₚ
= √p( 1 - p)/n = √0.61(1 - 0.61)/250
= 0.0308
The sample proportion is approximately normally distributed, p ~ N(0.62,0.03072).
a) The probability that more than 64% of the sampled adults drinks coffee daily is, P( X > 0.64) = P ( (X - μₚ)/σₚ < (0.64 - 0.61)/0.0308 = 0.974
Using the normal distribution table probability value, P (Z >0.974 ) is equals to 0.2574 so, P( X> 0.64) = 0.2574.
b) The probability that the proportion of the sampled adults who drink coffee daily is between 0.59 and 0.67, P ( 0.59 < p < 0.67) = P[(0.59 - 0.61) / 0.0308 < (p - μₚ)/σₚ < (0.67 - 0.61) / 0.0308]
= P(-0.65 < z < 1.94)
= P(z < 1.94) - P(z < -0.65 )
= 0.4738 - 0.2422
= 0.2316
Hence, required probability is 0.2316.
For more information about sample proportion, visit :
https://brainly.com/question/31265252
#SPJ4
Complete question:
Coffee: The National Coffee Association reported that 61% of U.S. adults drink coffee daily. A random sample of 250 U.S. adults is selected. Round your answers to at least four decimal places as needed.
a)find the probability that more than 64% of the sampled adults drinks coffee daily
b)Find the probability that the proportion of the sampled adults who drink coffee daily is between 0.59 and 0.67.
Match the frequency table with the correct probability
distribution table.
XO f
5
10
15
5
15
0
1
2
3
4
The frequency table and the probability distribution table have been matched correctly.
What is a frequency table?The frequency table consists of the number of occurrences of each value of the random variable x.
The probability distribution table consists of the probability of occurrence of each value of the random variable x.
The probability distribution table shows the probability of each value of the random variable x. The value of x can either be 0, 1, 2, 3, or 4. The respective probabilities of each value are 0.1, 0.12, 0.32, 0.16, and 0.6.
The frequency table shows the number of occurrences of each value of the random variable x. The value of x can either be 0, 1, 2, 3, or 4. The respective frequencies of each value are 5, 10, 15, 5, and 15.
The total of the frequencies in the frequency table is equal to the total of the probabilities in the probability distribution table.
The frequency of each value of the random variable x is equal to the product of the probability of that value and the total number of occurrences in the frequency table.
For more questions related to probability distribution
https://brainly.com/question/28021875
#SPJ1
Max says entire workout consists of 10 minutes of warm up exercises, 25 minutes of Lifting weights, and 15 minutes on the treadmill. What was the ratio of the number of minutes he lifted weights to the total number of minutes of his entire work out?
A) 1:1
B) 1:2
C) 3:10
D) 5:8
the ratio of the number of minutes he lifted weights to the total number of minutes of his entire workout is 1:2 option B is correct.
Ratios can be written in three forms:
A to B
A:B
A/B
Ratios are also simplified by reducing to lowest terms like fractions are.
This problem's ratio is:
minutes lifted weights to total minutes workout
The number of minutes lifting weights is in the question: 25.
To find the total minutes of his workout, add the number of minutes he spent for all of the activities:
Total minutes = warm-up + lifting weights + treadmill
Total minutes = 10 + 25 + 15
Total minutes = 50
The ratio before simplifying is 25÷50.
This ratio can be reduced to lowest terms. Both sides are divisible by 25.
[tex]\frac{25}{25}=1[/tex]
[tex]\frac{50}{25} = 2[/tex]
The ratio in the lowest terms is 1/2.
It can also be written as 1 to 2 or 1:2.
learn more about ratio ,
https://brainly.com/question/13419413
#SPJ1