please solve quantatitive methods of accounting

27. The manager of a small convenience store does not want her customers standing in line for too long prior co a purchase, she is willing to hire an employee for another cash register if the average wait time for the customers is more than five minutes. She randomly observes the wait time (in minutes) of customers during the day as: 3.55.87.21.9 6.8 8.15.4 a) Set up the null and the alternative hypotheses to determine if the manager needs to hire another employee. b) Calculate the value of the test statistic and the p- value. c) Decide whether the manager needs to hire another employee at =0.10