Refer to Exercise 9.68. Conduct a test of hypothesis with the intent of establishing that the mean bottle life is different from 55.0 days.
(a) Formulate the null and alternative hypotheses.
(b) Determine the test statistic.
(c) Give the form of the rejection region.
(d) What is the conclusion to your test? Take α = .05.
(e) What error could you have made in light of your decision in part (d)?
(f) What can you say about the P-value?