Question: The sample mean is 12 for a sample of 36. The population standard deviation is 3. The level of significance is .05. The hypothesis is:

H_o: μ ≤ 13

H_a: μ > 13

a. What is the decision rule? (When will you reject H_o?)

b. What is the value of the test statistic?

c. What is your decision regarding H_o? (Reject or do not reject H_o?)