-tailed test,
Two
= 0.05
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.
A.
B.
C.
D.
0
z
− z
0
z
0
z
0
z
− z
1
2
1
2

10.
State whether the standardized test statistic z indicates that
you should reject the null hypothesis.
(a) z = 1.618
(b) z = 1.675
(c) z =
− 1.498
(d) z =
− 1.868
-4
0
4
z
(a) For z
, should you reject or fail to reject the null hypothesis?
= 1.618
− z
0
= − 1.645
z
0
= 1.645

(b) For z
, should you reject or fail to reject the null hypothesis?
= 1.675

(c) For z
, should you reject or fail to reject the null hypothesis?
= − 1.498

(d) For z
, should you reject or fail to reject the null hypothesis?
= − 1.868
A.
because
.
Fail to reject H
0
z < − 1.645
B.
because
.
Fail to reject H
0
− 1.645 < z < 1.645
C.
because
.
Reject H
0
− 1.645 < z < 1.645
D.
because
.
Reject H
0
z < − 1.645

11.
Test the claim about the population mean,
, at the given level of significance using the given sample statistics.
Claim:
;
;
. Sample statistics:
, n
= 30
= 0.07
= 3.37
x = 29.3
Identify the null and alternative hypotheses. Choose the correct answer below.
= 66

Calculate the standardized test statistic.
The standardized test statistic is
(Round to two decimal places as needed.)
Determine the critical value(s). Select the correct choice below and fill in the answer box to complete your choice.
(Round to two decimal places as needed.)
.
.
±

Determine the outcome and conclusion of the test. Choose the correct answer below.
is
is
Fail to reject H
0
7
is not