For each question find all three parts

1. the test statistic Z=

2. Select A,B, or C and give value

A. The critical valueis t=

B.

The critical valueis t=enter your response here.

C.

The critical valuesare t/2=enter your response here 3. and do you Reject or Do not reject

1. A sample mean, sample size, and population standard deviation are provided below. Use the one-mean z-test to perform the required hypothesis test at the

10%

significance level.

x=20,

n=33,

=5,

H0:

=22,

Ha:

u<22

2. A sample mean, sample size, and population standard deviation are provided below. Use the one-mean z-test to perform the required hypothesis test at the

5%

significance level.

x=32,

n=35,

=6,

H0:

=36,

Ha:

<36

3. A sample mean, sample size, and population standard deviation are provided below. Use the one-mean z-test to perform the required hypothesis test at the

10%

significance level.

x=26,

n=14,

=7,

H0:

=20,

Ha:

>20

4. A sample mean, sample size, and population standard deviation are provided below. Use the one-mean z-test to perform the required hypothesis test at the

10%

significance level.

x=38,

n=24,

=5,

H0:

=37,

Ha:

37