Adele read an article about how tax-payers completed the majority of their tax forms. Here is what the article stated:
Who completed forms Self Family or friend Professional
47
%
47%47, percent 12
%
12%12, percent 41
%
41%41, percent
She wondered if senior citizens in her community followed this distribution, so she surveyed a random sample of 200
200200 senior citizens about how they completed their taxes. Here are her results:
Who completed forms Self Family or friend Professional
Senior citizens 90
9090 21
2121 89
8989
She wants to use these results to carry out a χ
2
χ 2
\chi, squared goodness-of-fit test to determine if senior citizens in her community complete their taxes differently than the article suggests.
What are the values of the test statistic and P-value for Adele's test?

Answer:

2/5 or 0.4, which is also equivalent to a 40% chance.

Step-by-step explanation:

To determine the theoretical probability of drawing a prime number from the numbers 2 through 16, we need to first identify the prime numbers in this range. The prime numbers between 2 and 16 are 2, 3, 5, 7, 11, and 13.

There are a total of 15 numbers in the hat, and 6 of them are prime. Therefore, the probability of drawing a prime number can be calculated as:

Probability of drawing a prime number = Number of favorable outcomes / Total number of possible outcomes

Number of favorable outcomes = 6 (since there are 6 prime numbers in the range of 2 through 16)

Total number of possible outcomes = 15 (since there are 15 numbers in the hat)

So, the probability of drawing a prime number is:

Probability of drawing a prime number = 6 / 15

Simplifying this fraction by dividing both numerator and denominator by 3, we get:

Probability of drawing a prime number = 2 / 5

Therefore, the theoretical probability of drawing a prime number from the numbers 2 through 16 is 2/5 or 0.4, which is also equivalent to a 40% chance.

Answer:

8 fluid ounces

Step-by-step explanation:

1 Cup is equal to 8 fluid ounces in US Standard Volume. 1 metric cup is 250 milliliters (which is about 8.5 fluid ounces). A US cup is about 237-240 mL

The distance a swimmer will travel if they swim from one corner to the opposite corner of an Olympic-size swimming pool is approximately 62.2 meters

The distance a swimmer will travel if they swim from one corner to the opposite corner of an Olympic-size swimming pool is approximately 62.2 meters. This can be calculated using the Pythagorean theorem, which states that the square of the hypotenuse of a right triangle is equal to the sum of the squares of the other two sides. In this case, the length of the pool is one side of the right triangle, the width of the pool is the other side of the right triangle, and the distance the swimmer travels is the hypotenuse.

Using the Pythagorean theorem, we can calculate the distance the swimmer travels as follows:

a² + b² = c²

where a is the length of the pool (50 meters), b is the width of the pool (25 meters), and c is the distance the swimmer travels.

To solve for c, we can plug in the values for a and b and simplify as follows:

50² + 25² = c²

500 + 625 = c²

125 = c²√3

125 = c

Approximately 62.2 meters (rounded to one decimal place)

Therefore, the distance a swimmer will travel if they swim from one corner to the opposite corner of an Olympic-size swimming pool is approximately 62.2 meters.

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Answer:

75

Step-by-step explanation:

Answer:

109°

Step-by-step explanation:

Given:

arc QS = 65°

∠QRS = 44°

Find: arc PS -

.

∠QRS = arc PS - arc QS

arc PS = ∠QRS + arc QS

arc PS = 44° + 65° = 109°

Mihir's daily basic energy requirement is 8424 (kl/day).

How to find BMI body mass index or BER from body mass?

As the formula to find daily BER is given below,

[tex]Daily\ BER\ = 5.4 \times 24 \times body\ mass[/tex]

body mass = 65 kg

Therefore, put body mass, to find BER,

[tex]Daily\ BER\ = 5.4 \times 24 \times 65\\Daily\ BER\ = 8424\ (kl/day)[/tex]

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Mihir's daily basic energy requirement is 7,776 kJ/day.

A person's BMI is calculated by dividing their weight in kilograms (or pounds) by their square of height in meters (or feet). A high BMI may indicate excessive body fat. BMI measures weight categories that could lead to health issues, but it does not assess a person's health or body fat percentage.

to calculate Mihir's daily basic energy requirement using the formula:

Daily BER (kl/day) = 5.4 x 24 hours x body mass (kg)

We can substitute the given values to get:

Daily BER (kl/day) = 5.4 x 24 hours x 65 kg

Daily BER (kl/day) = 7,776 kJ/day

Therefore, Mihir's daily basic energy requirement is 7,776 kJ/day.

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A control chart that measures variables measures characteristics that can be measured on a continuum of value like weight and volume.

Control diagrams are a measurable instrument used to screen and control processes over the long haul. They are utilized to follow factors that can be estimated on a consistent scale, like weight, volume, temperature, or time. These factors are not discrete, yet rather fall along a reach or continuum of values. By plotting information over the long haul on a control graph, a cycle can be observed to guarantee that it stays inside a predetermined scope of OK variety. The control diagram gives a visual portrayal of the cycle information, permitting process proprietors to recognize when the interaction is crazy or when it might require remedial activity. Generally, control outlines that action factors assist with guaranteeing the nature of the cycle yield by empowering process proprietors to distinguish and address issues before they bring about deformities or mistakes.

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The sum of the arithmetic series of 28 + 28.4 ...+ 42 is 1260.

An arithmetic series is a sequence of numbers in which each term is obtained by adding a constant difference, called the common difference, to the preceding term.

To resolve this issue, we can utilise the following formula for the sum of an arithmetic series:

S = (n/2) * (a₁ + aₙ)

When n is the number of terms, a1 is the first term, and an is the nth term, S is the series total.

To find the number of terms, we need to figure out the pattern of the series. The common difference (d) is expressed as follows:

d = 28.4 - 28 = 0.4

To get from 28 to 42, we need to add (42 - 28)/0.4 = 35 terms.

So the number of terms is:

n = 35 + 1 = 36

The first term is a₁ = 28, and the last term is aₙ = 42.

Now we can plug these values into the formula:

S = (n/2) * (a₁ + aₙ)

= (36/2) * (28 + 42)

= 18 * 70

= 1260

Therefore, the sum of the arithmetic series is 1260.

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The number 57 belongs to the sets Z, Q, and R, but not N or W.

What are natural numbers ?

Natural numbers are the counting numbers that we use to represent quantities and perform arithmetic operations. These are the numbers that we use to count objects, such as apples, books, or people.

The number 57 belongs to the following sets of numbers:

N (the natural numbers): No, because 57 is not a counting number.

W (the whole numbers): No, because 57 is not a non-negative integer.

Z (the integers): Yes, because 57 is an integer (a positive integer, in fact).

Q (the rational numbers): Yes, because 57 can be written as a ratio of two integers (57/1).

R (the real numbers): Yes, because every rational number is also a real number.

Therefore, the number 57 belongs to the sets Z, Q, and R, but not N or W.

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Complete question -

The missing side has a length of about 46.2 units

What is trigonometric ratio of tangent (tan)?

[tex] \tan( \theta) [/tex] = opposite/adjacent

Here [tex] ( \theta) [/tex] is opposite angle of base of the triangle.

The base is the side opposite to the right angle and has a length of 14 units (given).

The side opposite to the angle of 17° is the "opposite" side.

The side adjacent to the angle of 17° is the "adjacent" side.

We want to find the length of the missing side (let's call it "x"). To do this, we can use the trigonometric ratio of tangent (tan), which relates the opposite and adjacent sides:

tan(17°) = opposite/adjacent

So, tan(17°) = opposite/x

We can rearrange this equation to solve for x,

x = opposite / tan(17°)

Plugging in the values we have,

x = 14 / tan(17°)

Using a calculator, we find that tan(17°) is approximately 0.303,

So,x = 14 / 0.303 ≈ 46.2

Therefore, the missing side has a length of about 46.2 units (rounded to the nearest tenth).

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Answer:

Sure, here are the absolute value equations of 0 and 8, 5 and 17, and -4 and 6 in the form $|x-c|=d$:

* For 0 and 8, $|x-0|=8$. This means that $x-0=8$ or $x-0=-8$. Solving for $x$, we get $x=8$ or $x=-8$.

* For 5 and 17, $|x-5|=17$. This means that $x-5=17$ or $x-5=-17$. Solving for $x$, we get $x=22$ or $x=-12$.

* For -4 and 6, $|x-(-4)|=6$. This means that $x-(-4)=6$ or $x-(-4)=-6$. Solving for $x$, we get $x=10$ or $x=-2$.

I hope this helps! Let me know if you have any other questions.

Step-by-step explanation:

The standard deviation of the mean of the 25 newborn babies is approximately 0.4 pounds, rounded to 1 decimal place.

To find the standard deviation ,we will use the formula for the standard

deviation of the sampling distribution of the sample mean:

Standard deviation of the sample mean = σ / √n

Here, σ is the population standard deviation and

n is the sample size.

Given the population standard deviation (σ) is 2 pounds and the sample size (n) is 25 newborns, we can plug in the

values into the formula:

Standard deviation of the sample mean = 2 / √25

Standard deviation of the sample mean = 2 / 5

Standard deviation of the sample mean = 0.4

So, the standard deviation of the mean of the 25 newborn babies is approximately 0.4 pounds, rounded to 1 decimal place.

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Answer:

36 coins

Step-by-step explanation:

10 percent is 18 coins. so just double that.

Answer:

Step-by-step explanation:

Total coin Eva has = 180

20% of her coins are represented by 20% of the 180

= 20/100 * 180

=0.2 * 180= 36

36 coins represent 20% of Eva's coins.

A percentage is a number or ratio that represents a fraction of 100. It is used to describe numbers. It is a dimensionless quantity. A percentage is denoted by the % symbol.

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The cost of 3.25m lace would be $22.75

Multiplication is the mathematical operation that is used to determine the product of two or more numbers. If an event can occur in m different ways and if following it, a second event can occur in n different ways, then the two events in succession can occur in m × n different ways.

we are given 0.8m of lace costs $5.60

now, we can find cost of 1m of lace

so, we have to divide both sides by 0.8

1 m of lace cost [tex]=5.60\div0.8[/tex]

1 m of lace cost [tex]=7[/tex]

so, we will also get

[tex]3.25\div0.8 = 4.0625[/tex]

Now multiply that by 3.25

[tex]3.25 \times 7 = 22.75[/tex]

So, the cost of 3.25m lace is $22.75

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Answer:

y = 1/3x - 5

Step-by-step explanation:

The equation is y = mx + b

m = the slope

b = y-intercept

m = 1/3

Y-intercept is located at (0, -5)

So, the equation of the line is y = 1/3x - 5

According to the anime history, the best anime of all time with no haters is fullmetal alchemist brotherhood.

Anime is a style of animation that originated in Japan and has become popular worldwide. It is characterized by distinctive visual styles, such as colorful graphics, exaggerated features of characters, and expressive facial expressions. Anime covers a wide range of genres, including action, adventure, drama, comedy, romance, b fiction, fantasy.

There are numerous anime series that are widely popular and have received critical acclaim, such as "Fullmetal Alchemist: Brotherhood," "Attack on Titan," "Death Note," "Cowboy Bebop," "Dragon Ball Z," "Naruto," "One Piece," "Spirited Away," "Akira," "Ghost in the Shell," and many more.

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The percentage of data between 13.8 and 30.2 in a normally distributed data set with a mean of 22 and a standard deviation of 4.1 is approximately 94.19%.

To solve this problem, we can first standardize the values of interest using the standard normal distribution formula, z = (x - μ) / σ, where x is the value of interest, μ is the mean, and σ is the standard deviation.

For the lower value of 13.8, we have z = (13.8 - 22) / 4.1 = -1.95. For the upper value of 30.2, we have z = (30.2 - 22) / 4.1 = 2.05.

Next, we can use a calculator to find the area between these two z-scores. Alternatively, we can use the complement rule to find the area to the left of -1.95 and the area to the right of 2.05, and subtract their sum from 1.

Using a calculator, we find that the area between -1.95 and 2.05 is approximately 0.9419 or 94.19%. Therefore, approximately 94.19% of the data falls between 13.8 and 30.2 in this normally distributed data set.

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After simplifying the given functiοn F=2(3+5x)+8(7-x)+4(x-1) the answer is F = 2x + 58.

In mathematics, a functiοn frοm a set X tο a set Y assigns each element οf X exactly οne element οf Y. The sets X and Y are referred tο as the functiοn's dοmain and cοdοmain, respectively.

Initially, functiοns represented the idealized relatiοnship between varied quantities and οther variables. Fοr instance, time affects a planet's pοsitiοn. In the past, the idea was develοped with the infinitesimal calculus at the end οf the 17th century, and until the 19th century, the functiοns that were taken intο cοnsideratiοn were differentiable (that is, they had a high degree οf regularity).

Expanding and simplifying the expressiοn F:

F = 2(3) + 2(5x) + 8(7) - 8(x) + 4(x) - 4(1)

F = 6 + 10x + 56 - 8x + 4x - 4

F = 2x + 58

Therefοre, F = 2x + 58.

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Complete question is:

Simplify F=2(3+5x)+8(7-x)+4(x-1).

The probability that an arriving call will be routed by the voicemail system is given by[tex]P(Y = 0) = e^(-0.1067) * 0.1067^0 / 0! = 0.8982,[/tex]rounded to four decimal places.

Since phone calls arrive at a rate of 16 per hour, the arrival rate of calls in minutes is 16/60 = 0.2667 calls per minute. We can model the arrival rate of calls as a Poisson distribution with parameter λ = 0.2667.

The time for the voicemail system to route a call follows an exponential distribution with a mean of 2.5 minutes. Let X be the time it takes to route a call. Then X follows an exponential distribution with parameter μ = 1/2.5 = 0.4.

We want to find the probability that an arriving call will be routed by the voicemail system. This is equivalent to finding the probability that there are no calls being routed by the voicemail system when a call arrives. Let Y be the number of calls being routed by the voicemail system. Then Y follows a Poisson distribution with parameter λμ = 0.2667 x 0.4 = 0.1067.

Therefore, the probability that an arriving call will be routed by the voicemail system is given by

[tex]P(Y = 0) = e^(-0.1067) * 0.1067^0 / 0! = 0.8982,[/tex]  rounded to four decimal places.

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Answer:

2, 3, 5, 9, 17

Step-by-step explanation:

using the recursive rule [tex]a_{n}[/tex] = 2[tex]a_{n-1}[/tex] - 1 with a₁ = 2

a₁ = 2

a₂ = 2a₁ - 1 = 2(2) - 1 = 4 - 1 = 3

a₃ = 2a₂ - 1 = 2(3) - 1 = 6 - 1 = 5

a₄ = 2a₃ - 1 = 2(5) - 1 = 10 - 1 = 9

a₅ = 1a₄ - 1 = 2(9) - 1 = 18 - 1 = 17

the first 5 terms are 2 , 3 , 5 , 9 , 1 7

Answer: D. 33

Step-by-step explanation:

Answer:

None of them, 3x + 15 is correct.

Step-by-step explanation:

In order to apply the distributive properly correctively, we need to multiply everything in the parentheses. For an example, lets look at the given expression:

[tex]3(x+5)[/tex]

We multiply everything in the parentheses by 3

[tex]3x+15[/tex]

Looking at out choices, none of them uses the distributive property correctly.

Answer:

Therefore, the time for the return trip is:

≈ 5.306 seconds

Step-by-step explanation:

Let's start by finding the speed of the boat. We know that the boat travels 400m at a constant speed, so we can use the formula:

Speed = Distance / Time

Speed = 400m / Time (for one-way trip)

Let's assume that the time for the one-way trip is t. Then we can rewrite the speed formula as:

Speed = 400m / t

Now let's find the time for the return trip. We know that the boat travels the same route at the same speed for 2 minutes, which is equivalent to 120 seconds. This means that the distance traveled on the way back is:

Distance = Speed x Time

Distance = (400m / t) x 120 seconds

Distance = 48000m / t

We also know that when Pilar increases the boat's speed by 10 m/min, the return trip is 60 seconds faster. This means that the time for the return trip is:

t - 60 seconds

Using the same formula as before, the distance traveled on the return trip is:

Distance = (400m / (t + 1/2)) x (t - 60) seconds

Distance = (400m / (t + 1/2)) x (t - 60/60) minutes

Distance = 400m x (t - 60/60) / (t + 1/2) minutes

Now we know that the distance traveled on the way back is equal to the distance traveled on the way there:

48000m / t = 400m x (t - 60/60) / (t + 1/2)

Simplifying this equation, we get:

48 / t = 4 x (t - 1/3) / (t + 1/2)

Multiplying both sides by (t + 1/2), we get:

48(t + 1/2) / t = 4(t - 1/3)

Simplifying this equation, we get:

96 / t = 4t - 4/3

Multiplying both sides by t, we get:

96 = 4t^2 - 4/3t

Multiplying both sides by 3, we get:

288 = 12t^2 - 4t

Rearranging this equation, we get

12t^2 - 4t - 288 = 0

Dividing both sides by 4, we get:

3t^2 - t - 72 = 0

Using the quadratic formula, we can solve for t:

t = [1 ± sqrt(1 + 4(3)(72))] / 6

t = [1 ± sqrt(865)] / 6

Since t must be positive, we take the positive root:

t ≈ 6.366

Therefore, the time for the return trip is:

t - 60 seconds ≈ 6.366 - 60 seconds ≈ 5.306 seconds

a. The necessary assumptions are the population variances are equal and combine the two sample variances into one.

b. The null and alternative hypotheses are defined.

c. The sample sizes are equal, and the sample standard deviations are approximately equal, we can safely assume equal variances and pool the sample variances.

d. The value of test statistic is 3.15 and p value is 0.05.

e. The mean diameter of bearings from machine 2 is greater than that of machine 1 at a 5% level of significance.

To begin the hypothesis test, the manager needs to state the null and alternative hypotheses. The null hypothesis (H0) is the statement of "no difference" between the mean diameters of bearings from the two machines. The alternative hypothesis (Ha) is the statement that the mean diameter of bearings from machine 2 is greater than that of machine 1.

In symbols,

H0: μ1 = μ2 (where μ1 is the mean diameter of machine 1 and μ2 is the mean diameter of machine 2) and

Ha: μ2 > μ1.

Before conducting the hypothesis test, we need to check some assumptions.

The next step is to calculate the test statistic and p-value. We use a t-test to compare the means of two independent samples. The test statistic is calculated as:

t = (x₁ - x₂) / [s_p x √(2/n)]

where x₁ and x₂ are the sample means, s_p is the pooled standard deviation, and n is the sample size.

Plugging in the numbers, we get:

t = (3.355 - 3.302) / [0.050 x √(2/50)] = 3.15

Using a t-distribution table with 98 degrees of freedom (n₁ + n₂-2), we find that the p-value associated with a t-value of 3.15 is less than 0.01.

Finally, we need to state our conclusion based on the p-value. Since the p-value is less than our significance level of 0.05, we reject the null hypothesis.

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Answer:

121f + 39

Step-by-step explanation:

Simplify the expression:

[tex]4(32f+1)-7(f+5)[/tex]

Use the distributive property to distribute 4 and 7

[tex]128f+4-7f+35[/tex]

Lets rearrange terms to make it easier

[tex]128f+-7f+4+35[/tex]

Add like terms and integers

[tex]121f+39[/tex]

Assuming the coordinates of point A are (3, 5): we would have the following results.

1. To reflect over the x-axis: the x-coordinate remains the same and the y-coordinate changes sign. So point B will have the same x-coordinate as point A (3), but the y-coordinate will be -5. Therefore, the coordinates of point B are (3, -5).

2. To reflect over the y-axis: the y-coordinate remains the same and the x-coordinate changes sign. So point C will have the same y-coordinate as point A (5), but the x-coordinate will be -3. Therefore, the coordinates of point C are (-3, 5).

3. To translate: add the given values to the x and y coordinates. So point D will have an x-coordinate of 3 + 3 = 6, and a y-coordinate of 5 + 4 = 9. Therefore, the coordinates of point D are (6, 9).

4. To rotate 180 degrees clockwise: flip the signs of both the x and y coordinates and then swap them. So point E will have an x-coordinate of -5 and a y-coordinate of -3. Therefore, the coordinates of point E are (-5, -3).

Plotting these points on a graph,
A (3, 5)

B  (3, -5)

C  (-3, 5)

D (6, 9)

E  (-5, -3)

we get the attached graph.

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An equation in slope-intercept form of the line that passes through (-3, 2) and (-2, - 5) is: C. y = -7x - 19.

In Mathematics and Geometry, the point-slope form of a straight line can be calculated by using the following mathematical equation:

y - y₁ = m(x - x₁)

Where:

First of all, we would determine the slope of this line;

Slope (m) = (y₂ - y₁)/(x₂ - x₁)

Slope (m) = (-5 - 2)/(-2 + 3)

Slope (m) = -7/1

Slope (m) = -7

At data point (-3, 2), a linear equation in slope-intercept form for this line can be calculated as follows:

y - y₁ = m(x - x₁)

y - 2 = -7(x + 3)

y = -7x - 21 + 2

y = -7x - 19

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Answer: 1. Chord 2. Diameter

Answer:

Step-by-step explanation:

Since A and G are on a line thats not in the middle of the circle, the clear answer would be a chord

Since C is a point on the middle of the circle and B is at the end of the circle, the answer would be radius