We need to round up to the next higher integer, the sample size required to estimate the mean with an error of +4 and 95 Percent confidence is 170.
To find the sample size to estimate the mean with an error of +4 and 95 percent confidence, we need to use the formula:
n = [(z*sigma)/E]^2
Where:
n = sample size
z = z-score for 95% confidence level (which is 1.96)
sigma = standard deviation (unknown in this case)
E = maximum allowable error (which is +4 in this case)
We are given that o=12, which is the population standard deviation. Since we do not have any information about the sample standard deviation, we can use the population standard deviation as an estimate. Therefore, we can substitute o=12 in the above formula to get:
n = [(1.96*12)/4]^2
n = 169.64
Since we need to round up to the next higher integer, the sample size required to estimate the mean with an error of +4 and 95 percent confidence is 170.
To Learn More About Percent
https://brainly.com/question/24877689
SPJ11
You need to staff your next banquet for 5 hours with the following personnel 14 servers 5 bartenders 4 hosts and 2 banquet captains. Captains are paid 60% more than the 17 per hour for the rest of the staff what is your total payroll for banquet
Hence, the banquet's overall payroll came to $1,495 as the number of captains by their pay rate, and the number of hours worked.
what is unitary method ?We must first determine the rate of pay for each group of employees before multiplying that number by the total number of employees for the dinner. The pay rate for captains is as follows because they are paid 60% above the rest of the staff: Compensation for captains is $17 per hour plus 60% of that amount, or $17 plus $10.20, for a total hourly wage of $27.20. The pay rate for the remaining employees is: $17 per hour is the pay rate for waitresses, bartenders, and hosts. Now, we can determine the banquet's overall payroll using the formula below.
given
We must first determine the pay rate for each group of employees before multiplying that number by the total number of employees for the dinner.
The pay rate for captains is as follows because they are paid 60% more than the rest of the staff:
Compensation for captains is $17 per hour plus 60% of that amount, or $17 plus $10.20, for a total hourly wage of $27.20.
The pay rate for the remaining employees is:
$17 per hour is the pay rate for servers, bartenders, and hosts.
Now, we can determine the banquet's overall payroll using the formula below:
Total payroll is calculated by multiplying the number of servers by their pay rate, the number of bartenders by their pay rate, the number of hosts by their pay rate, the number of captains by their pay rate, and the number of hours worked.
Total payroll is (14 x $17) plus (5 x $17) plus (4 x $17) plus (2 x $27.20) x 5 = $238 plus $85 plus $68 plus $272 x 5
Total compensation: $1,495
Hence, the banquet's overall payroll came to $1,495 as the number of captains by their pay rate, and the number of hours worked.
To know more about unitary method visit:
https://brainly.com/question/28276953
#SPJ1
Need some help
50 points!!
Answer:
145°
Step-by-step explanation:
The exterior angle 3 is equal to the sum of angle 1 and 2.
Using substitution we can say that:
5x + 4x + 10 = 10x -5
9x + 10 = 10x -5
10x-9x=10+5
x= 15
We have just found that the value of x is equal to 15.
By substituting this back to the angle 3 expression, 10x-5, we get
10(15) - 5
150 - 5
145°
Tom and John are engaged in buying and selling certain products A and B. Tom BUYS 5 of product A but
SELLS twice as much of product B. John on the other hand SELLS three times what Tom BOUGHT of
product A and BUYS 13 of product B. At the end of the business day, John banks Ksh 110,000/- while
Tom banks Ksh 230,000.
Under the assumption that the sale prices for product A and B are the same for the two men, and the costs prices for the products A and B are also the same for the two men, obtain the following:
The price for product A which was determined as Ksh 42,727.27 and the price for product B as 44,363.63
Question: If there was a mark up of 25% on the cost price and a discount of 15% on the sale price, how
much would each of the partners have banked at the end of the business day?
Tom would bank Ksh 277,272.73 and John would bank Ksh 693,939.39 at the end of the business day with 25% markup.
What is markup?The markup is the discrepancy between a product's selling price and its cost price. Adding a particular percentage to the cost price to arrive at the selling price of a product is a frequent practise in business. Depending on the sector, the level of competition, and other elements, the markup % may change.
Since it influences a product's or service's profitability, markup is significant in business. If the markup is too low, the company could not have a sufficient profit to pay its bills and continue operating. The product could not be competitive with other similar items on the market if the markup is too high.
Let us suppose the cost price and sales price = x.
Thus,
For Tom:
Cost of 5 A + Cost of 2B = 5x + 2x = 7x
Sale of 10 B = 10(2x) = 20x
Here,
Profit = Sale - Cost = 20x - 7x = 13x
For the given value of profit we have:
Tom's profit = Ksh 230,000
13x = 230,000
x = 17,692.31
Simillarly for Jhon:
or John:
Sale of 3 A = 3(5x) = 15x
Cost of 13 B = 13x
Profit = Sale - Cost = 13x - 15x = -2x
John's profit = Ksh 110,000
-2x = 110,000
x = -55,000
Now, the markup is 25%,:
New cost price for John = 17,692.31
New sale price for John = 17,692.31 + 0.25(17,692.31) = 22,115.39
Actual sale price for John = 22,115.39 - 0.15(22,115.39) = 18,798.08
The new profit is thus:
New cost price for John = 17,692.31
New sale price for John = 17,692.31 + 0.25(17,692.31) = 22,115.39
Actual sale price for John = 22,115.39 - 0.15(22,115.39) = 18,798.08
Hence, Tom would bank Ksh 277,272.73 and John would bank Ksh 693,939.39 at the end of the business day.
Learn more about markup here:
https://brainly.com/question/11999225
#SPJ1
QUESTION 3
If y varies inversely as x, find the inverse variation equation for the situation.
y = 1/8 when x = 40
[tex]yx=5[/tex]
Explanation:
If [tex]y[/tex] varies inversely as [tex]x[/tex] then
[tex]y\times x=k[/tex] for some constant [tex]k[/tex]
Since [tex]y = \frac{1}{8}[/tex] when [tex]x=40[/tex]
[tex]\huge \text(\dfrac{1}{8}\huge \text)\times(40)=k[/tex]
[tex]\longrightarrow k=5[/tex]
The line joining (-3p, 0) to (-1, 5) is parallel to the line joining (p, 1) to (2p, 3). Find p.
Answer:
write ✍️
Step-by-step explanation:
justification for the following line translation . line 1 3p-
A school newspaper took a survey of 100 students the results of the survey showed that 43 students are fans of Buffalo Bills 27 students are fans of New York Jets and 48 students do not like either team how many of the students surveyed are fans of both the Buffalo Bills and the New York Jets?
Answer: 18 students
Step-by-step explanation: 43+27+48=118 118-100=18
The measures of the angles of a triangle are shown in the figure below. Solve for x.
Answer:
x = 14°
Step-by-step explanation:
The sum of the angles of a triangle is 180°
.
Let's make an equation according to this:
47° + 103° + (3x - 12)° = 180°
150° + 3x - 12° = 180°
3x = 180° + 12° - 150°
3x = 42° / : 3
x = 14°
what is the best estimate of 2/3+3/4
Let's add the fractions first and then we can estimate the sum.
[tex]= \dfrac{2}{3} +\dfrac{3}{4}[/tex]
change to common denominators
[tex]= \dfrac{8}{12} +\dfrac{9}{12}[/tex]
add numerators only
[tex]\dfrac{17}{12}[/tex] or [tex]1\dfrac{5}{12}[/tex] or [tex]1.42[/tex]
ANSWER: 13 is the best estimate of the answer. Normally we round up to 1.4 with a number like 1.42, but since that is not a choice, we can estimate 1 as the answer.
(1/x-y)-(2/2x+y)+(1/x+y)-(2/2x-y)
Answer:
6xy^2/(x-y)(x+y)(2x+y)(2x-y)
Step-by-step explanation:
1 - 2 + 1 - 2
x-y 2x+y x+y 2x-y
= take LCM
Then simplify.
Answer:
-2x+2/x
Step-by-step explanation:
Dean qualifies for a 5-year loan from his credit union with a 5.25% APR. Assuming he uses the $4,300 as a down payment. You have already calculated his loan amount and his monthly payment. Considering all the monthly payments and the down payment, what will be the total amount that he pays for the car if he gets the loan and pays it off as scheduled? Round to two decimal places.
The total amount that he will pay for the car will be $17,093.40, assuming a loan amount of $15,000, a down payment of $4,300, a 5-year loan term, and a 5.25% APR.
Assuming that Dean has used the $4,300 as a down payment, his loan amount would be the total cost of the car minus the down payment, which is not given in the question.
However, assuming that the loan amount is $15,000 (which would be the case if the total cost of the car was $19,300), the monthly payment would be $284.89.
To calculate the total amount that Dean pays for the car over the course of the loan, we can multiply the monthly payment by the number of payments (60 payments over 5 years) and add the down payment:
Total amount = (Monthly payment x Number of payments) + Down payment
Total amount = ($284.89 x 60) + $4,300
Total amount = $17,093.40
Therefore, if Dean gets the loan and pays it off as scheduled, the total amount that he will pay for the car will be $17,093.40.
To learn more about total cost please click on below link
https://brainly.com/question/30928238
#SPJ1
A bird flying at 15 m
above sea level dives vertically 2 m
into the sea to catch a fish and returns to its initial height.
What was the total vertical distance it travelled?
The bird covered 34 metres of vertical space overall. Warm-blooded, feathery animals with the ability to fly are known as birds.
The bird soared 15 m above the water, dove 2 m vertically, and descended to a depth of the water that was 15 + 2 = 17 m below its starting height. The bird must fly 17 m vertically upwards in order to cover the same distance in the other direction in order to return to its starting height.
Consequently, the bird travelled a total vertical distance of 34 metres (17 metres when diving and 17 metres while returning to its starting height).
Hence, the bird covered 34 metres of vertical space overall.
Learn more about Flying here:
https://brainly.com/question/14160656
#SPJ4
The perimeter of a rectangle is 34 feet. The length, l, of the garden is 14.38. the length, l, of the garden is 5 more than 2 times the width. Find the measurement of the width of the garden
The width of the garden is 4 feet.
What is Rectangle ?
A rectangle is a quadrilateral with four right angles, opposite sides that are parallel, and equal in length. It is a type of parallelogram where the adjacent sides are equal in length, but the opposite sides are not necessarily equal.
Let's start by using the formula for the perimeter of a rectangle:
Perimeter = 2(length + width)
We know that the perimeter is 34 feet, so we can plug in that value and simplify:
34 = 2(l + w)
17 = l + w
We also know that the length is 5 more than 2 times the width, so we can write an equation for that:
l = 2w + 5
We can substitute this expression for l into the first equation:
17 = (2w + 5) + w
Simplifying, we get:
17 = 3w + 5
12 = 3w
w = 4
Therefore, the width of the garden is 4 feet.
To learn more about Rectangle from given link.
https://brainly.com/question/15238546
#SPJ1
Need help with question #4
Both the lines are parallel hence, they cannot intersect each other and value of H= (0,0).
What is an equation?A mathematical statement known as an equation consists of two algebraic expressions separated by equal signs (=) on either side.
It demonstrates the equality of the relationship between the printed statements on the left and right.
Left side equals right side in all formulas.
To find the values of unknowable variables, which stand in for unknowable quantities, you can solve equations.
A statement is not an equation if it lacks the equals sign.
When two expressions have the same value, a mathematical statement known as an equation will include the symbol "equal to" between them.
Hence, Both the lines are parallel hence, they cannot intersect each other and value of H= (0,0).
learn more about equations click here:
brainly.com/question/2972832
#SPJ1
Can someone please help ASAP!
The correct answer for this would be: Triangles BCA and DAC are congruent according to the Angle-Side-Angle (ASA) Theorem.
What is a Parallelogram?
A parallelogram is a straightforward quadrilateral with two sets of parallel sides in Euclidean geometry. A parallelogram's facing or opposing sides are of equal length, and its opposing angles are of similar size.
According to the ASA theorem, if the included side of one triangle and its two angles are comparable to the parts of another triangle, then the triangles are said to be congruent.
Check the attached file for the image of this problem.
Read more about parallelogram here:
https://brainly.com/question/3050890
#SPJ1
for acute angles A and B it is known that sin A - 28/53 and tan B = 4/3. find the value of cos(A+B) in simplest form
For acute angles A and B it is known that sin A - 28/53 and tan B = 4/3. , , the value of cos(A+B) in simplest form is -15/53.
Describe Angles?In geometry, an angle is the measure of the amount of turn between two lines that intersect at a point, called the vertex of the angle. Angles are typically measured in degrees, but can also be measured in radians.
Angles can be classified based on their measures. An angle that measures less than 90 degrees is called an acute angle, while an angle that measures exactly 90 degrees is called a right angle. An angle that measures greater than 90 degrees but less than 180 degrees is called an obtuse angle, while an angle that measures exactly 180 degrees is called a straight angle. Finally, an angle that measures greater than 180 degrees but less than 360 degrees is called a reflex angle.
We can start by using the identity:
cos(A + B) = cos A cos B - sin A sin B
To find cos A and sin A, we can use the identity:
sin² A + cos² A = 1
sin A = √(1 - cos² A)
We are given sin A = 28/53, so we can solve for cos A:
sin² A + cos² A = 1
(28/53)² + cos² A = 1
cos² A = 1 - (28/53)²
cos A = ± √[(53/53)² - (28/53)²]
Since A is acute, we take the positive root:
cos A = √(1 - (28/53)²)
To find sin B and cos B, we can use the identity:
tan B = sin B / cos B
We are given tan B = 4/3, so we can solve for sin B and cos B using the Pythagorean identity:
sin² B + cos² B = 1
sin B = (4/3) cos B
(4/3)² cos² B + cos² B = 1
cos² B = 1 / ((4/3)² + 1)
cos B = √(1 / ((4/3)² + 1))
sin B = (4/3) cos B
Now we can substitute all of these values into the formula for cos(A + B):
cos(A + B) = cos A cos B - sin A sin B
cos(A + B) = √(1 - (28/53)²) √(1 / ((4/3)² + 1)) - (28/53) (4/3) √(1 / ((4/3)² + 1))
cos(A + B) = (√((53² - 28²) / 53²)) (√(9 / (16 + 9))) - (4/3) (28/53) (√(9 / (16 + 9)))
cos(A + B) = (45/53) (√(9/25)) - (112/265) (√(9/25))
cos(A + B) = (9/53) - (24/53)
cos(A + B) = -15/53
Therefore, cos(A + B) = -15/53.
To know more about Pythagorean visit:
https://brainly.com/question/28008006
#SPJ1
1. in a completely randomized design, 10 experimental units were used for the first treatment, 12 for the second treatment, and 19 for the third treatment. sum of squares due to treatments and sum of squares total is computed as 1100 and 1700 respectively. prepare the anova table and complete the same (fill out all the cells). state the hypotheses. at a .05 level of significance, is there a significant difference between the treatments? use both p-value and critical-value approaches
We can cοnclude that there is a significant difference between the treatments.
What is p-value apprοach?This methοd is abοut determining "likely" οr "unlikely" by determining the prοbability assuming the null hypοthesis were true οf οbserving a mοre extreme test statistic in the directiοn οf the alternative hypοthesis than the οne οbserved.
Using the p-value apprοach, we can calculate the p-value fοr the F-statistic.
we see that F = 7.28. The degrees οf freedοm fοr treatments and errοr are df1 = 2 and df2 = 38, respectively. we can find that the p-value is apprοximately 0.0026.
Using the critical-value apprοach, we can find the critical value οf F fοr a significance level οf 0.05 and degrees οf freedοm df1 = 2 and df2 = 38. Frοm a table οr calculatοr, we find that the critical value is apprοximately 3.18.
Since the p-value (0.0026) is less than the significance level (0.05), we reject the null hypοthesis. Alternatively, since the F-statistic (7.28) is greater than the critical value (3.18), we reject the null hypοthesis.
Therefοre, we can cοnclude that there is a significant difference between the treatments.
To know more about p-value approach visit,
https://brainly.com/question/14189134
#SPJ9
Find the value of x, y, and z in the rhombus below.
(-x-8)
107⁰
(3y-1)
(-42-7)
Step-by-step explanation:
It is not clear from the given information which angles and sides are being referred to as "107⁰", "-x-8", "-42-7", and "3y-1". However, we can use some properties of rhombuses to solve for x, y, and z.
Opposite angles in a rhombus are equal. Therefore, if one angle is 107⁰, then the opposite angle is also 107⁰.
The diagonals of a rhombus are perpendicular bisectors of each other. This means that they intersect at a right angle and divide each other into two equal parts.
The diagonals of a rhombus bisect each other's angles. This means that the angles formed by each diagonal with the sides of the rhombus are equal.
Using these properties, we can set up some equations to solve for x, y, and z:
Let's assume that "-x-8" and "-42-7" are the lengths of the diagonals of the rhombus, and that "3y-1" is the length of one of the sides.
Since the diagonals bisect each other's angles, we know that the angles formed by each diagonal with the side of the rhombus are equal. Let's call each of these angles "z":
-z + 107⁰ + z = 180⁰ (sum of angles in a triangle)
107⁰ = 180⁰ - 2z
2z = 73⁰
z = 36.5⁰
Now let's use the fact that the diagonals are perpendicular bisectors of each other:
(-x-8)/2 = (-42-7)/2
-x-8 = -49
-x = -41
x = 41
Finally, let's use the fact that the sides of a rhombus are equal:
-x-8 = 3y-1
41-8 = 3y-1
33 = 3y
y = 11
Therefore, the values of x, y, and z in the rhombus are:
x = 41
y = 11
z = 36.5⁰
Help with math problems
The answer choice which is not a true statement include the following: C. the solution set of |3k + 3| ≤ -9 is {k|-4 ≥ k ≥ 2}.
What is an inequality?In Mathematics and Geometry, an inequality simply refers to a mathematical relation that is typically used for comparing two (2) or more numerical data and variables in an algebraic equation based on any of the inequality symbols;
Greater than (>).Less than (<).Greater than or equal to (≥).Less than or equal to (≤).In order to determine the solution set to the given inequality, we would write out the absolute value function (inequality) as shown below.
|3k + 3| ≤ -9
Since |3k + 3| would always be positive and negative nine (-9) is negative, |3k + 3| will always be greater than negative nine (-9), and as such, the inequality cannot be true and has no solution set.
Read more on inequality here: brainly.com/question/27976143
#SPJ1
Donna and Kayleigh both go to the same high school. Donna lives 21 miles from the school.
Kayleigh lives 6 miles from Donna.
Part A. Write an absolute value equation to represent the location of Kayleigh's house in
relation to the high school.
Part B. How far could Kayleigh live from her school?
The absolute value equation for Kayleigh's location in relation to the high school is |21 - d| = 6. By solving this equation, we find that Kayleigh could live either 15 miles or 27 miles away from the school.
Explanation:Part A: The absolute value equation would represent the distance between Kayleigh's house and the high school, which can either be closer or further away from the school compared to Donna's house. Given that Donna lives 21 miles from school, and Kayleigh lives 6 miles away from Donna, we can set an equation to indicate all possible locations of Kayleigh's home. The equation would be |21 - d| = 6, where 'd' represents the distance from Kayleigh's house to the high school.
Part B: To understand how far Kayleigh could live from her school, solve the equation above for 'd', you get two solutions: 21 - 6 = 15 miles and 21 + 6 = 27 miles. Therefore, Kayleigh could either live 15 miles or 27 miles away from the school.
Learn more about Absolute Value Equations here:https://brainly.com/question/35209059
#SPJ2
a group of private investors purchased a condominium complex for $5 million. they made an initial down payment of 15% and obtained financing for the balance. if the loan is to be amortized over 11 years at an interest rate of 9.1%/year compounded quarterly, find the required quarterly payment. (round your answer to the nearest cent.)
With the given compound interest, the required quarterly payment is $38,745.74.
What is Compound interest?
Compound interest is the interest that is calculated on the initial principal as well as the accumulated interest of previous periods. In other words, it is the interest on interest. The interest is added to the principal at the end of each compounding period, and then the new total amount becomes the principal for the next period's interest calculation.
Now,
The amount financed is equal to the purchase price minus the down payment:
Amount financed = $5,000,000 - 0.15($5,000,000) = $4,250,000
To find the quarterly payment,
PV = Pmt * (1 - (1 + r)⁻ⁿ) / r
where PV is the present value (amount financed), Pmt is the quarterly payment, r is the quarterly interest rate, and n is the total number of quarterly payments (11 years x 4 quarters/year = 44 quarters).
The quarterly interest rate is equal to the annual interest rate divided by 4:
r = 0.091 / 4 = 0.02275
Substituting the values, we get:
$4,250,000 = Pmt * (1 - (1 + 0.02275)⁻⁴⁴) / 0.02275
Solving for Pmt, we get:
Pmt = $38,745.74
Therefore, the required quarterly payment is $38,745.74 (rounded to the nearest cent).
To know more about Compound Interest visit the link
brainly.com/question/14295570
#SPJ1
how many 1/3s are in three
Please, write the equation in the attachment in standard form.
Answer: No Solutions
Step-by-step explanation:
The square root of -125 if undefined
Therefore, the answer in no solutions
I need help, please show me the work and explain, I'm giving 50 points.
Answer:
Area_sector = 9.8 square inches
Step-by-step explanation:
A sector is a piece of a circle. Like a pie slice. We can use the angle given to find out what fraction of the circle we are looking for.
There are 360° in a circle. The sector is 125°. So the fraction of the circle we are looking for is (125/360) Of course this can be reduced, but we should just let the calculator handle it.
Now, the area of the whole circle is:
A = pi•r^2
A = pi • 3^2
The radius is given. r = 3
A = 9pi
They said to use 3.14 for pi
A = 28.26
This is the area of the whole circle, so we need to multiply by that fraction to find the area of the pie slice (sector)
Area_sector =
(125/360)28.26
= (0.3472222)28.26
= 9.8125
Round to the nearest tenth.
~= 9.8
PERCENTAGES QUESTIONSS
So, the answer in its simplest form is 1/200.a) Here's the completed frequency tree: Drink tea.
So, the number of people who drink at least 3 cups of tea each day is:[tex]10 * 0.2 = 2[/tex]Therefore, the fraction of the 400 people who drink at least 3 cups of tea each day is: 2 / 400This fraction can be simplified by dividing both the numerator and the denominator by their greatest common factor, which is 2:1 / 200So, the answer in its simplest form is 1/200.
What is fraction?A fraction is a numerical quantity representing a part of a whole or a ratio between two quantities. It is expressed as one number (the numerator) divided by another number (the denominator), separated by a horizontal line. The numerator represents the number of parts being considered, while the denominator represents the total number of equal parts that make up the whole. For example, in the fraction 3/4, the numerator is 3, which represents three parts out of a total of four equal parts. Fractions can be used to represent many different types of quantities, such as parts of a whole, ratios, percentages, and probabilities.
b) Out of the 400 people, 10 said yes to drinking tea, and 20% of those (or 0.20*10 = 2) said they drink at least 3 cups each day. Therefore, the fraction of people who drink at least 3 cups of tea each day is 2/400, which simplifies to 1/200.
To know more about fraction visit:
https://brainly.com/question/1301963
#SPJ1
What is 2 3/4 + -1 1/8
Answer:
hope it helps.
I NEEEED THE ANSWER PLS.The graph f(x) = x2 is shown on the grid. If Jeffrey transforms the graph to create b(x) = f(x - 8), which statement about the graphs will is true?
In parabola, the vertex of b(x) is 8 units to the right of the vertex of .
What is parabola in math?
A parabola is a U-shaped plane curve in which every point is situated at an equal distance from both the focus, a fixed point, and the directrix, a fixed line. All of the parabola-related ideas are discussed here since it is a crucial component of the conic section subject. When f(x)=ax² +bx +c, where a, b, and c are real integers and a0, the function is said to be quadratic.
f(x) = x²
b(x) = f(x - 8)
f(x) = x²
f(x- 8) = (x- 8)²
f(X-8) = x² - 16x + 64
b(X) = f(x- 8) = x² - 16x + 64
Comparing b(X) = x² - 16x + 64 with y = ax² + bx + c
a = 1, b = -16 , c = 64
-b/2a = 8 ...........1
Hence, the x-coordinate of vertex is 8.
putting x = 8 in b(x)
b(8) = 8² - 16 * 8 + 64 = 0
So, the vertex of b(x) is (8,0)
Comparing f(x) = x² with y = ax² +bx+c
a = 1 , b= 0 , c = 0
-b/2a = 0 .........2
Hence, the x-coordinate of vertex is 0.
putting x = 0 in f(X)
f(0) = 0² = 0
So, the vertex of f(x) = (0,0)
Thus, the vertex of b(x) is 8 units to the right of the vertex of .
(Option A is false.)
Learn more about parabola
brainly.com/question/31142122
#SPJ1
Can someone help me with this?
Answer: 63,932
Step-by-step explanation:
September: 11,724
October: 14,380 + 11,724 = 26,104
November: 14,380 + 11,724 = 26,104
Combine all 3 months to get your answer= 63,932
1. (100 pts) Consider two players A and B in a contest. The first one who wins a game wins the
contest. In the case of 5 successive draws, the contest is declared drawn. The probability that A
wins a game is 0.2. The probability that B wins a game is 0.5. And, thus, the probability of a draw
is 0.3. The winning or draw of each game is independent of previous games. The duration of the
contest is defined as the total number of games that are played before a winner is determined or
the contest is declared drawn.
(a) What is the PMF of the duration of the contest?
(b) What is the probability that the duration is at least 4?
The probability that the duration is at least 4 is 0.0053 (rounded to four decimal places).
What is probability?Probability is represented by a number between 0 and 1, with 0 denoting an impossibility and 1 denoting a certainty.
According to question:(a) Let X be the duration of the contest. Then X can take values from 1 to 6, where 1 indicates that A or B wins the first game, and 6 indicates that the contest ends in a draw after 5 successive draws.
We can find the PMF of X by considering the possible outcomes for each value of X.
P(X = 1) = P(A wins) + P(B wins) = 0.2 + 0.5 = 0.7
P(X = 2) = P(A loses, B loses, A wins or B wins) = 0.3 * 0.3 * (0.2 + 0.5) = 0.054
P(X = 3) = P(A loses, B loses, A loses, B loses, A wins or B wins) = [tex]0.3^4[/tex] * (0.2 + 0.5) = 0.01323
P(X = 4) = P(A loses, B loses, A loses, B loses, A loses, B loses, A wins or B wins) = [tex]0.3^6[/tex] * (0.2 + 0.5) = 0.00243
P(X = 5) = P(A loses, B loses, A loses, B loses, A loses, B loses, A loses, B loses, A wins or B wins) = [tex]0.3^8[/tex] * (0.2 + 0.5) = 0.0004374
P(X = 6) = P(5 successive draws) = [tex]0.3^5[/tex] = 0.00243
Therefore, the PMF of X is:
X 1 2 3 4 5 6
P(X) 0.7 0.054 0.01323 0.00243 0.0004374 0.00243
(b) To find the probability that the duration is at least 4, we need to add the probabilities of X = 4, X = 5, and X = 6.
P(X >= 4) = P(X = 4) + P(X = 5) + P(X = 6) = 0.00243 + 0.0004374 + 0.00243 = 0.0052974
Therefore, the probability that the duration is at least 4 is 0.0053 (rounded to four decimal places).
To know more about probability visit:
https://brainly.com/question/1835102
#SPJ1
Use a Venn Diagram or Union Rule; and the given information to determine the number of elements in the indicated region.
If n(U) = 103, n(A)= 32, n(B) = 52, n(A ∩ B)=11, n(A ∩ C)=14, n(A ∩ B ∩ C)= 6, n(A' ∩ B ∩ C')=35, n(A' ∩ B' ∩ C')=24
Find n(C)
There are 30 elements in region C.
What is the inclusion-exclusion principle?
The inclusion-exclusion principle is a counting technique used in combinatorics to find the size of a set that is a union of several other sets. It states that the size of the union of two or more sets is equal to the sum of their individual sizes minus the size of their intersection(s).
To find n(C), we can use the inclusion-exclusion principle:
n(A ∪ B ∪ C) = n(A) + n(B) + n(C) - n(A ∩ B) - n(A ∩ C) - n(B ∩ C) + n(A ∩ B ∩ C)
We know that n(U) = 103, so we can use this to find n(B ∩ C) as follows:
n(B ∩ C) = n(B ∪ C) - n(B') = n(U) - n(B' ∩ C') - n(B' ∩ C) - n(B ∩ C') = 103 - 24 - 35 - n(B ∩ C')
Similarly, we can find n(A' ∩ C) and n(A ∩ B' ∩ C) as follows:
n(A' ∩ C) = n(U) - n(A ∪ C') = 103 - n(A) - n(C') + n(A ∩ C') = 103 - 32 - n(C') + 14 = 85 - n(C')
n(A ∩ B' ∩ C) = n(U) - n(A ∪ B' ∪ C') = 103 - n(A ∪ B') - n(C') + n(A ∩ B' ∩ C') = 103 - 69 - n(C') + 6 = 40 - n(C')
Now we can substitute these values into the inclusion-exclusion principle to get:
92 + 52 + n(C) - 11 - 14 - n(B ∩ C) - 32 - (85 - n(C)) - (40 - n(C)) + 6 = n(U)
Simplifying, we get:
n(C) - n(B ∩ C) - 21 = 0
n(C) = n(B ∩ C) + 21
To find n(B ∩ C), we can use the formula we derived earlier:
n(B ∩ C) = 103 - 24 - 35 - n(B ∩ C')
n(B ∩ C') = n(U) - n(B' ∪ C') = n(U) - n(B') - n(C') + n(B' ∩ C') = 103 - 52 - n(C') + 24 = 75 - n(C')
Substituting this into the equation for n(B ∩ C), we get:
n(B ∩ C) = 103 - 24 - 35 - (75 - n(C))
n(B ∩ C) = 39 - n(C)
Now we can substitute this into the equation for n(C) to get:
n(C) = (39 - n(C)) + 21
2n(C) = 60
n(C) = 30
Therefore, there are 30 elements in region C.
To learn more about the inclusion-exclusion principle visit:
https://brainly.com/question/30995367
#SPJ1
Find the coordinates of the circumcenter of the triangle with the given vertices. A(2,6), B(8,6), C(8,10)
Answer:
The circumcenter of the triangle with vertices A(2,6), B(8,6), and C(8,10) is (8,6).
Step-by-step explanation:
To find the circumcenter of the triangle with vertices A(2,6), B(8,6), and C(8,10), we can use the following steps:
Step 1: Find the midpoint of two sides
We first find the midpoint of two sides of the triangle. Let's take sides AB and BC:
Midpoint of AB: ((2 + 8)/2, (6 + 6)/2) = (5, 6)
Midpoint of BC: ((8 + 8)/2, (6 + 10)/2) = (8, 8)
Step 2: Find the slope of two sides
Next, we find the slope of the two sides AB and BC:
Slope of AB: (6 - 6)/(8 - 2) = 0
Slope of BC: (10 - 6)/(8 - 8) = undefined
Step 3: Find the perpendicular bisectors of two sides
Since the slope of AB is 0, its perpendicular bisector is a horizontal line passing through the midpoint of AB, which is y=6. Since the slope of BC is undefined, its perpendicular bisector is a vertical line passing through the midpoint of BC, which is x=8.
Step 4: Find the intersection of perpendicular bisectors
The circumcenter is the point where the two perpendicular bisectors intersect. The intersection point is (8,6).
Therefore, the circumcenter of the triangle with vertices A(2,6), B(8,6), and C(8,10) is (8,6).