8.3 - Using the information below, conduct a hypothesis test using the 4-step approach:

H0: = 7.48 Ha: < 7.48 n = 36 = .01 x = 6.91 = 1.21

Step 1 - State the hypothesis (already done for you...see above). Will this be a one-tailed or a

two-tailed test?

Step 2 - Set the criteria for a decision. Will this be a z-test or a t-test?

Step 3 - Compute the test statistic.

Step 4 - Make a decision.

8.4 - Using the information below, conduct a hypothesis test using the 4-step approach:

H0: = 7.82 Ha: < 7.82 n = 17 = .05 x = 7.01 s = 2.18

Step 1 - State the hypothesis (already done for you...see above). Will this be a one-tailed or a

two-tailed test?

Step 2 - Set the criteria for a decision. Will this be a z-test or a t-test?

Step 3 - Compute the test statistic.

Step 4 - Make a decision.

8.5 - Using the information below, conduct a hypothesis test using the 4-step approach:

H0: = 1200 Ha: > 1200 n = 113 = .10 x = 1215 = 100

Step 1 - State the hypothesis (already done for you...see above). Will this be a one-tailed or a

two-tailed test?

Step 2 - Set the criteria for a decision. Will this be a z-test or a t-test?

Step 3 - Compute the test statistic.

Step 4 - Make a decision.