Suppose that 20% of students at high school A and 18% of students at high school B participate on a school athletic team. Independent random samples of 30 students from each school are selected and asked if they participate on a school athletic team. Let ˆ p A represent the sample proportion of students at school A who participate on a school athletic team and ˆ p B represent the sample proportion of students at school B who participate on a school athletic team.

What is the mean of the sampling distribution of ˆ p A − ˆ p B ?

Answers

Answer 1

Answer:

0.02

Step-by-step explanation:

High schools A :

Percentage of participants in on the school athletic team = 20%

Pa = 20% = 0.2

High school B:

Percentage of participants in on the school athletic team = 18%

Pa = 18% = 0.18

The mean of sampling distributon is :

Pa - Pb

0.2 - 0.18

Hence, Mean of sampling distribution is 0.02


Related Questions

Macy makes a base salary of $2,500 a month, plus 3% commission on her total sales. Macy's total sales for the month were $5,500. what is her gross salary?

Answers

Answer:

4,150 is Macy's salary

Step-by-step explanation:

2,500+(0.3)(5,500)=total

          2,500+1650=total

                     4,150=total

solve using substitution
x=10
6x-6y=18
y=?

Answers

y = 7

hope it's helpful ❤❤❤❤❤❤

THANK YOU.

Step-by-step explanation:

6x -6Y = 18

6 × 10 -6y = 18

60 -6y = 18

-6y = 18 -60

-6y = -42

y = -42/-6

y = 7

What are the solutions of the quadratic equation below?
x2 - 4x - 6 = 0
O x = 2 + 12
O x = 2 + V10
O x = -2+2
O x = -2 + V10

Answer quickly pls

Answers

Answer:

the second one

Step-by-step explanation:

A pitcher could hold 1/2 of a gallon of water. If Sam filled up 8 pitchers, how much water would he have?

Answers

Answer:

4 gallons

Step-by-step explanation:

just do 8 times 1/2 because 8 is the amount of pitchers filled but one pitcher is only half.

Put the following equation of a line into slope-intercept form, simplifying all
fractions.
8x – 6y = 54

Answers

y = 4/3x - 9
Hiiiiiiiiii

Pls help me I have a hour to turn this in.

Answers

Answer:

i think its D not very sure but i think its D

The answer is B because the circle isn’t colored in then there’s suppose to be no line under < and it’s pointing left

To complete a task in 15 days, a company has 4 people each working 8 hours a day. The company
decide to have 5 people each working 6 hours a day. Assume that each person works at the same
rate.

a) How many days will it take the 5 people to complete the task?

b)Comment on how the assumption affects your answer to part (a).​​

Answers

Answer:

Let's suppose that each person works at an hourly rate R.

Then if 4 people working 8 hours per day, a total of 15 days to complete the task, we can write this as:

4*R*(15*8 hours) = 1 task.

Whit this we can find the value of R.

R = 1 task/(4*15*8 h) = (1/480) task/hour.

a) Now suppose that we have 5 workers, and each one of them works 6 hours per day for a total of D days to complete the task, then we have the equation:

5*( (1/480) task/hour)*(D*6 hours) = 1 task.

We only need to isolate D, that is the number of days that will take the 5 workers to complete the task:

D = (1 task)/(5*6h*1/480 task/hour) = (1 task)/(30/480 taks) = 480/30 = 16

D = 16

Then the 5 workers working 6 hours per day, need 16 days to complete the job.

b) The assumption is that all workers work at the same rate R. If this was not the case (and each one worked at a different rate) we couldn't find the rate at which each worker completes the task (because we had not enough information), and then we would be incapable of completing the question.

Christina used 1 5/8cups of shampoo to wash her hair 13 days. How many cups of shampoo did she use to wash her hair 1 day?

Answers

Answer:

0.125 cups

Step-by-step explanation:

Hi! When we have these types of questions we always think about how to solve them first. It cannot be subtraction or addition. It cannot be multiplication, so its division! Divide 1 5/8 into 13 and you get 0.125 cups.

Hope this helps!

I NEED HELP

The table shows the measured dimensions of a prism, and the maximum and minimum possible values based on the greatest possible error. Find the percent error to the nearest percent. Hint: First determine the measured volume, then the maximum volume and the minimum volume.


A. 65%


B. 50%


C. 35%

Answers

The answer could be B not sure hold up don’t pick yet

Answer: 50% said the person up

5 6 costs $150 to rent a party room at Pizza-n-Games, plus $6 per person for pizza and $5 per person for game ckets. The expression shown gives the total cost for n people. 150+60+5n Evaluate the expression to find the cost for a party of 15 people, A $161 B. $165 C. $315 Click to add speaker note​

Answers

Answer:

315

Step-by-step explanation:

Find the value of x.

Answers

Answer:

12

Step-by-step explanation:

2DE = BC

8n = 6n + 6

2n = 6

n = 3

4n = 4(3) = 12

261.24 = 15w - 23.75

Answers

W= 28499/1500
Hopefully its correct

right rectangular prism has a square base with sides that are 7 meters in length. The height of the prism is 15 meters. Find the volume of the prism in cubic meters.

Answers

Answer:

The volume of the prism   V = 735 cubic meters

Step-by-step explanation:

Explanation:-

Given that length of the rectangular prism(l) = 7 m

and also the width of the rectangular prism(w) = 7 m

The height of the rectangular prism = 15 m

The volume of the prism

                        V = l× w × h

                       V = 7 × 7× 15

                       V = 735 cubic meters

The volume of the prism   V = 735 cubic meters

               

Which angle has its terminal side on the negative x axis? Pls answer soon

Answers

Answer:

d-pi radians

Step-by-step explanation:

Answer:

Pi- radiants

Step-by-step explanation:

What kind of triangle is this?

Answers

Answer:

Obtuse

Step-by-step explanation:

Hope this helps you :)

Answer:
Obtuse
Hope this helps (:

Plz help please i need it soon

Answers

Answer:

Step-by-step explanation:

110=(8x-10)

110+10=8x-10+10

120=8x

120/8=8x/8

15=x

What is the measure of 40 angle A’B’C’?

Answers

Answer:

angle ABC is a straight angle or, 180°

A gym employee is paid monthly. After working for three months, he had earned $4,500. To determine how much money he will make over a six-month period, he created the table below.

Answers

Answer:

In 6 months he will make $9000

Step-by-step explanation:

Answer:

He makes 1500 every month

Step-by-step explanation:

1.) The _____ value of your ordered pair is the input

2.) The _____ value of your ordered pair the output

Answers

1. x-value
2. y-value
1.) X-value

Reason: the set of inputs, also called x-coordinates, of the order pairs.

2.) Y-value

Reason: the range the set of outputs, also called y-coordinates of ordered pairs.

URGENT,PLEASE HELP!!!!!if -2 is the solution of the equation 2x+1-3c=2c+3x-7, find the value of c.​

Answers

Answer:

Step-by-step explanation:

There are 4 cups in a row from left to right. The green cup is somewhere between the yellow and blue cups. The red cup is somewhere left of the yellow cup. Based on that information, how many different arrangements of these cups could there be? Can you solve this?

Answers

Answer: 2 combinations .

Red, Yellow, Green, Blue

Blue, Green, Red, Yellow

Step-by-step explanation:

Solve the inequality 0 > 4x - 1 with step by step explanation please​

Answers

Answer:

[tex]x < \frac{1}{4} [/tex]

Step-by-step explanation:

0 > 4x-1

0+1 > 4x-1+1 (rid -1)

1>4x change side for easier solution

; 4x<1 change side = change mark

x < ¼

hope it helps ☺️

5. Here are the first four terms of an arithmetic sequence: 6, 10, 14, 18..
a) First the sum of first 30 terms of the sequence.

Answers

Answer:

it hard too

Step-by-step explanation:

it's hard also so

Answer:   180

an = a1 + (n - 1)d

a1 = 6 [1st term]

d = 4 [common difference]

n = 30 [30th term]

a30 = 6 + (30 - 1)*6 = 180

If £23 = 500rubles, how many £ are in 616 rubles? Give your answer to 2 dp.

Answers

Answer:

28.34

Step-by-step explanation:

821.8 divided by 4

pls help i have so many missing assignments

Answers

Answer:

205.45ㅤㅤㅤㅤㅤㅤㅤㅤ

Answer:205.45

Step-by-step explanation:

821.8 / 4 = 205.45

Find the product. Enter the product in simplest form. 8 x 1/3 =

Answers

8x1/3 is in the simplest form. 8x1/3=7 3/3x1/3=8 3/9. 8 3/9=8 1/3.

Simplest Form: 8 1/3

It’s 8 1/3 that’s simplest form

The answers for fall math test 8th grade

Answers

Answer:

ok

Step-by-step explanation:

Answer:
Okay

Explanation:

A 4 sided polygon has 2 congruent sides and the non congruent sides are parallel. What is the most accurate name of the polygon?

1. Trapezoid
2. Isosceles Trapezoid
3. Kite
4. Parallelogram

Answers

Answer:

Trapezoid

Step-by-step explanation:

So there's four sides on a trapezoid. The top and bottom ones are parallel. But they're not congruent. I don't think... Anyway, good luck.

Answer:

2. Isosceles Trapezoid

Step-by-step explanation:

1. Trapezoid

False. Trapezoid has no two congruent sides

2. Isosceles Trapezoid

True. Sides are congruent and bases are parallel.

3. Kite

False. Two pairs of congruent sides but none are parallel.

4. Parallelogram

False. Two pairs of congruent sides but both are parallel

How would I find this? Would I do 90-40 and then get 50 or would I have to do 90-50 to get x?

Answers

Answer:

i think u have to use subtraction

Answer:

x = 50

Step-by-step explanation:

The sum of the 3 angles in a triangle = 180°

subtract the sum of the 2 given angles from 180 for x

x = 180 - (90 + 40) = 180 - 130 = 50

Bookstore A sells a particular book for $15.25, but they have it on sale for 20% off. Bookstore B sells it for $12.45. How much more does it cost at Bookstore B?

Answers

Answer:

$0.25

Step-by-step explanation:

to find the amount bookstore A sales after the 20% discount, cross multiply x/15.25=20/100 and you get $3.05. 15.25-3.05 gives you $12.2. substract 12.2 from 12.45 and you get $0.25. book B costs $0.25 more than book A.

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