In the single-server model the:
A) customers are assumed to arrive at constant intervals of time.
B) variability of customer arrivals is most often described by a Poisson distribution.
C) mean of the distribution of customer arrivals must be greater than the variance of customer arrivals to get meaningful results.
D) probability of n arrivals in T time periods comes from a normal distribution.
B
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What type of annuity payment option provides a guaranteed income to the annuitant for life and, if the annuitant dies before the annuity is depleted, a lump-sum cash payment to the annuitant's beneficiary?
A) Period certain option B) Cash refund option C) Straight life option D) Installment refund option
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