In the single-server model,
A) customers are assumed to arrive at constant intervals of time.
B) the variability of customer arrivals is most often described by a Poisson distribution.
C) the mean of the distribution of customer arrivals must be greater than the variance of customer arrivals to get meaningful results.
D) the probability of n arrivals in T time periods comes from a normal distribution.

Question

Quizplus · Accepted Answer

The single-server model assumes the variability of customer arrivals to be described by a Poisson distribution. Option A is incorrect as customers are not necessarily assumed to arrive at constant intervals of time. Option C is also wrong as there is no such requirement for the mean and the variance. Option D is incorrect as the probability distribution for the number of arrivals in time periods T is not necessarily normal, it is Poisson.

In the Single-Server Model