21/2021Week 8 Assignment Part II-Joseph GrovoguiS. Find the critical value(s) and rejection region(s) for the type of z-test with level of significance a. Include a graph with youranswer.Right-tailed test, a= 0.071.40The critical value(s) is/are z=(Round to two decimal places as needed. Use a comma to separate answers as needed.)Select the correct choice below and, if necessary, fill in the answer box to complete your choice.(Round to two decimal places as needed.)A. The rejection region is z>B. The rejection region is z <C. The rejection regions are z<and z>Choose the correct graph of the rejection region below.O A.В.O C.D.-zO ZZ-z 0 z 7. Find the critical value(s) and rejection region(s) for the type of z-test with level of significance a. Include a graph with youranswer.Two-tailed test, a=0.09-1.70The critical value(s) is/are z=(Round to two decimal places as needed. Use a comma to separate answers as needed.)Select the correct choice below and, if necessary, fill in the answer box to complete your choice.(Round to two decimal places as needed.)O A. The rejection region is z<B. The rejection region is z>C. The rejection regions are z<and z>Choose the correct graph of the rejection region below.O A.O B.O C.O D.-z 0z-Z 0 z

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Description: 21/2021Week 8 Assignment Part II-Joseph GrovoguiS. Find the critical value(s) and rejection region(s) for the type of z-test with level of significance a. Include a graph with youranswer.Right-tailed test, a= 0.071.40The critical value(s) is/are z=(

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21/2021
Week 8 Assignment Part II-Joseph Grovogui
S. Find the critical value(s) and rejection region(s) for the type of z-test with level of significance a. Include a graph with your
answer.
Right-tailed test, a= 0.07
1.40
The critical value(s) is/are z=
(Round to two decimal places as needed. Use a comma to separate answers as needed.)
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
(Round to two decimal places as needed.)
A. The rejection region is z>
B. The rejection region is z <
C. The rejection regions are z<
and z>
Choose the correct graph of the rejection region below.
O A.
В.
O C.
D.
-z
O Z
Z
-z 0 z

7. Find the critical value(s) and rejection region(s) for the type of z-test with level of significance a. Include a graph with your
answer.
Two-tailed test, a=0.09
-1.70
The critical value(s) is/are z=
(Round to two decimal places as needed. Use a comma to separate answers as needed.)
Select the correct choice below and, if necessary, fill in the answer box to complete your choice.
(Round to two decimal places as needed.)
O A. The rejection region is z<
B. The rejection region is z>
C. The rejection regions are z<
and z>
Choose the correct graph of the rejection region below.
O A.
O B.
O C.
O D.
-z 0z
-Z 0 z

Expert Solution

Definition:

The z-test is any test for which the distribution of the test statistic for null hypothesis can be approximately normal. In hypothesis testing it is used to determine whether the population means are significantly different only when the population variances are known.

A critical value is a line on a graph that splits into sections. One or two of the sections is the rejection region.

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