Answered>Order 2362

Lisa, another HR manager, thinks that the problems have nothing to do with the night shift, so she wants to prove to Edgar that proportion of day-shift workers getting adequate sleep and night-shift workers getting adequate sleep is the same. She interviews 50 day-shift workers and finds that 31 claim to get at least seven hours of sleep per night. Using the surveys for night-shift workers from problem 2 (HR surveys 80 night-shift workers and finds that 46 of them claim to get at least seven hours of sleep per night), can we say that Lisa is wrong with 95% confidence? In your answer, please use the critical-value method, stating the null and alternative hypotheses as well as the test statistic you will use.