32. Faulty or not You are in charge of shipping

Chapter 21, Problem 32

(choose chapter or problem)

32. Faulty or not? You are in charge of shipping computersto customers. You learn that a faulty disk drive wasput into some of the machines. Theres a simple test youcan perform, but its not perfect. All but 4% of the time, agood disk drive passes the test, but unfortunately, 35% ofthe bad disk drives pass the test, too. You have to decideon the basis of one test whether the disk drive is good orbad. Make this a hypothesis test.a) What are the null and alternative hypotheses?b) Given that a computer fails the test, what would youdecide? What if it passes the test?c) How large is for this test?d) What is the power of this test? (Hint: How many possibilitiesare in the alternative hypothesis?)