Question: 4. (75 points) Consider a bank that has four tellers. The arrival rate of customers, ra, is 6 people per minute. The effective processing rate

4. (75 points) Consider a bank that has four

4. (75 points) Consider a bank that has four tellers. The arrival rate of customers, ra, is 6 people per minute. The effective processing rate of each teller, re, is 120 people per hour. Assume that the coefficient of variation of interarrival times, ca, and the effective coefficient of variation of process time, ce, are both equal to one. Compute the utilization, u, and the coefficient of variation of interdeparture times, cd : u: cd

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