Q. The supervisor at the Precision Machine Shop wants to determine the staffing policy which minimizes total operating costs .The average arrival rate at the tool crib, where tools are dispensed to the workers, is 8 machinists per hour. Each machinist' pay is $20.The supervisor can staff the crib either with two junior attendants or with a senior attendant. Each junior attendant is paid $12 per hour also can process 9 arrivals per hour. Each senior attendant is paid $20 per hour also can process 16 arrivals per hour. Which option should be selected, also illustrate what would be the total estimated hourly cost? Elucidate clearly by showing all your work. (Note: L=1.1077 for the option for two junior attendants)