1answer.
Ask question
Login Signup
Ask question
All categories
  • English
  • Mathematics
  • Social Studies
  • Business
  • History
  • Health
  • Geography
  • Biology
  • Physics
  • Chemistry
  • Computers and Technology
  • Arts
  • World Languages
  • Spanish
  • French
  • German
  • Advanced Placement (AP)
  • SAT
  • Medicine
  • Law
  • Engineering
Iteru [2.4K]
2 years ago
6

Suppose in the population, the Anger-Out score for men is two points higher than it is for women. The population variances for m

en and women are both 20. Assume the Anger-Out scores for both genders are normally distributed. Given this information about the population parameters:
(a) What is the mean of the sampling distribution of the difference between means?
(b) What is the standard error of the difference between means?
(c) What is the probability that you would have gotten this mean difference or less in your sample?
Mathematics
1 answer:
tatuchka [14]2 years ago
8 0

Answer:

a)= 2

b) 6.324

c) P= 0.1217

Step-by-step explanation:

a) The mean of the sampling distribution of X`1- X`2 denoted by ux`-x` = u1-u2 is equal to the difference between population means i.e = 2 ( given in the question)

b) The standard deviation of the sampling distribution of X`1- X`2 ( standard error of X`1- X`2) denoted by σ_X`1- X`2 is given by

σ_X`1- X`2 = √σ²/n1 +σ²/n2

Var ( X`1- X`2) = Var X`1 + Var X`2 =  σ²/n1 +σ²/n2

so

σ_X`1- X`2 =√20 +20 = 6.324

if the populations are normal the sampling distribution X`1- X`2 , regardless of sample sizes , will be normal with mean u1-u2 and variance σ²/n1 +σ²/n2.

Where as Z is normally distributed with mean zero and unit variance.

If we take X`1- X`2= 0 and u1-u2= 2  and standard deviation of the sampling distribution = 6.324 then

Z= 0-2/ 6.342= -0.31625

P(-0.31625<z<0)= 0.1217

The probability would be 0.1217

You might be interested in
Calculate the rate of change for each given function.
lions [1.4K]

Answer:

For function B the rise/run or the rate of change is 3/5 and for the chart would be 2

Step-by-step explanation:

Explain because its change in y/ change in x so up 3 over 5 would give 3/5 and for the chart is 2 because its change in y over change in x and since y is 4 and x is 2 4/2=2. hope this helps

5 0
3 years ago
How do you round 8.97998
viva [34]

Answer:

to the nearest number that would be 9

Step-by-step explanation:

7 0
3 years ago
Read 2 more answers
Given a monthly income of $1,500, how do you determine the yearly. salary this person will earn
Nina [5.8K]

Answer:

C: $1500 x 12

Step-by-step explanation:

It's simple. You've gotta multiply to get this answer.

7 0
3 years ago
A Ribbon is 12 3/4 feet long. Into how many 3/4 foot pieces can it be cut?
ch4aika [34]
17 pieces can be cut because you have to divide 12 3/4 by 3/4
8 0
3 years ago
Outside a home, there is a 10-key keypad with the letters A, B, C, D, E, F, G, H, I, and J that can be used to open the garage i
Assoli18 [71]

Answer:

3,628,800 (aka "10!")

Step-by-step explanation:

The first letter in the code can be 10 possible letters.

Since every letter can only be used once, the second letter can only be 9 possible letters.

E.G.: If the first letter is A, the second letter is B-J.

The third letter would be 8 possible letters, than the fourth would be 7, etc.

In math form, figuring out the possible combinations would be written out as so:

10 × 9 × 8 × 7 × 6 × 5 × 4 × 3 × 2 × 1

An easier way to write this out would be using "10!", which stands for "10 Factorial"

The result of the above equals 3,628,800.

4 0
3 years ago
Other questions:
  • WHAT IS A GEOMETRIC SEQUENCE?
    8·2 answers
  • Amy is six years younger than Melody. Two years ago, Melody was three times as old as Amy. How old is Amy now?
    12·2 answers
  • Mrs. Ruiz bought 5 bags of balloons for a party. Each bag contained 70 gallons. Andy said Mrs. Ruiz bought a total of 75 gallons
    5·1 answer
  • When multiplying or dividing integers,if you an even amount of negatives in the promblem ,your answer will be negative true or f
    10·2 answers
  • how are adding and subtracting two rational numbers with different signs related to adding and subtracting two integers with dif
    10·1 answer
  • what are the coordinates of the vertices of the the triangle under the traslation (x,y)-&gt; (x+3, y +2)
    7·1 answer
  • —4 + 5 — 7 = 10 + 3х – 2х
    9·1 answer
  • Express tan J as a fraction in simplest terms.<br> J<br> 34<br> K<br> L<br> 16
    7·1 answer
  • 1- is -12.17 a integer?<br> 2- 5/5 an integer?<br> 3- 485.84 an integer?<br> 4 - -16/13 an integer?
    13·1 answer
  • Which is a solution to the following system of equations?
    9·1 answer
Add answer
Login
Not registered? Fast signup
Signup
Login Signup
Ask question!