Everything about two different waiting line systems is the same except one system has a constant service time and the other has a Poisson distributed service time.Customers using the system with the constant service time will have half the waiting time of the customers using the system with Poisson distributed service times.

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Quizplus · Accepted Answer

In queueing theory, a constant service time leads to less variability and thus reduces waiting time compared to a Poisson distributed service time, which has more variability.

Everything About Two Different Waiting Line Systems Is the Same