Question: A service system has the average customer interarrival time =3 minutes. The average processing time is 15 minutes. Assume that the system has Poisson arrivals

A service system has the average customer

A service system has the average customer interarrival time =3 minutes. The average processing time is 15 minutes. Assume that the system has Poisson arrivals and exponential service time. If the manager aims to control the average customer waiting time within 4 minutes, what is the minimum number of servers in this system? (Hint: compare the waiting time of all four choices) 6 8 9 7 QUESTION 19 A vendor sells newspapers at $2 per unit, and each costs $0.6 to order from the supplier. At the end of the day, unsold newspapers have a salvage value of $0.1 per unit. The vendor has the following daily demand distribution. What is the optimal production quality? 48 50

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