third time posting this because incorrect answers

The Robotics Manufacturing Company cperates an equipment repair business where envergency jobs arrive randomly at the rate of two jobs per 8-hour day, The company's repair faclity is a singie-server system operated by a repair technician. The service time varies, with a mean repoir time of 3.0 hours and a standard deviation of 1.9 hours. The company's cost of the repoir operation is $26 per houe. In the economic analysis of the waiting line system, Aobotics uses $36 per hour cost for customers waiting during the repair process (a) What are the arrival rate and service rate in fobs per hour? (Round your answers to four decimat places.) == (D) Show the operating characteristis. (Round your answers to four decimal places. Report time in hours.) tee=Xt=XW4=bw= Show the total cost per hour. (Express the total cast per hour in dellars. Round your answer to the nearest cent.) TC=3x (c) The company ls considenng purchasing a computer based equipment repair system that would enable a constant repair time of 3.6 hours. For practical purposes, the standard deviation is 0 . because of the computerbased system, the company's cost of the new operation would be slo per hour. What effect will the new system haye on the wailing line characteristies of the repsir service? (Round your answers to four decimal places. Report time in hours.) wa=xw= Show the total cost per hour. (Express the totat cost per hour in dollars. Round your answer to the nearest cent.). TC=1x (d) Does pering for the cemputerbased system to reduce the variation in cervice time make economic sense? The firmis director of oberabions tejected the request for the new tystem because the houfly cost it $4 higher and the mean repair time is the same. Do you agree? How much (io dollari) wit the new syitem save the company during a 40hour work week? (Round your antwer to the nearest cent. Enter 0 if there are no savings.) The average sevings over a 40-beur work week amount to s X. Based en this, the dicector's argument thould be