Question: 1 Staffing at the Optimal Utilization A large grocery store is attempting to staff its check-out registers. Currently, the arrival rate is = 320 customers

1 Staffing at the Optimal Utilization A large1 Staffing at the Optimal Utilization A large

1 Staffing at the Optimal Utilization A large grocery store is attempting to staff its check-out registers. Currently, the arrival rate is = 320 customers per hour, each server has a service time of E(T) = 3.75 minutes on average, and the interarrival and service times follow an exponential distribution. Considering any one of the individual s* queues, derive the expected number of customers waiting in line. a. 8.1 customers b. 3.2 customers C. 0.9 customers d. 2.25 customers For any one of the individual s* queues, what is the expected waiting time (minutes) spent in line for a customer? a. 4 minutes b. 15 minutes c. 10 minutes d. 38 minutes

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