Question: A sample of n= 9 scores is obtained from a normal population distribution with ?= 12. The sample mean M= 60.

a. With a two-tailed test and α- .05, use the sample data to test the hypothesis that the population

mean is µ= 65.

b. With a two-tailed test and α= .05, use the sample data to test the hypothesis that the population mean is µ=55.

c. In parts (a) and (b) of this problem, you should find that µ= 65 and µ= 55 are both acceptable

hypotheses. Explain how two different values can both be acceptable.