Assume that a hypothesis test will be conducted with null hypothesis Ho: >20. Assume also that we are sampling from a normal distribution with unknown population SD.

a) How would we describe this test? [ Select ] ["Left-Tailed T-Test", "Right-Tailed T-Test", "Left-Tailed Z-Test", "Right Tailed Z-Test"]

b) Find the critical value for the test if the sample size is n = 15 and and the significance level is 0.05.

[ Select ] ["-1.645", "-1.761", "-1.96", "1.645", "2.62"]

c) Suppose the sample data produces a test value = -2. Based on this hat would be the decision about Ho?

[ Select ] ["Reject Ho", "Do not reject Ho", "Accept Ho"]