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Business, 11.05.2021 18:50 vcasela

Bill First general Manager of Worthmore dept. Store has estimated that every hour of customer time spent waiting in line for the sales clerk to become avvailable cost the store $100 in lost sales and goodwill. Customers arrive at the checkout counter at a rate of 30 per hour, and the avareage service time is 3 minutes. The Poisson disdribution describes the arrivals and the service times are exponentially distributed. The number of sales clerks can be 2,3, or 4 with each one working at the same rate. Bill estimates the salary & benefits for each clerk to be $10 per hour. The store is open 10 hours per day. a) Find the average time in line if 2,3 and 4 clerks are used.
b) What is the total time spent waiting in line each day if 2,3, and 4 clerks are used?
c) Calculate the total of daily waiting cost and service cost if 2, 3 and 4 clerks are used.
What is the minimum total daily cost?

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