A computer manufacturing company claims that only 7.3% of their computers are returned. Kelly thinks that the company is misrepresenting the true proportion of computers that are returned, and that the true proportion is higher than they claim. She wants to test this using a = 0.1. Kelly takes a sample of 260 computers and observes that 25 are returned. Assume a normal sampling distribution.
(a) What are the null and alternative hypotheses?