In the single-server model,
A) the service time of a customer is most often described by an exponential distribution.
B) the service time depends on the number of customers in the system as long as there is at least one customer in the waiting line.
C) the mean of the service-time distribution must be as great as the target service time for a feasible solution.
D) service times are always constant to avoid large waiting lines.

Question

Quizplus · Accepted Answer

In the single-server model, the service time of a customer is most often described by an exponential distribution. This is due to the memoryless property of the exponential distribution, which means that the probability of a customer completing service in a given time interval does not depend on how long the customer has already been in service. Thus, the exponential distribution is a commonly used distribution to model service times in the single-server model.

In the Single-Server Model