Question: A single server waiting line system which is characterized by a Poisson distribution has an arrival rate, n=3 customers per hour. The service times are

A single server waiting line system which is characterized by a Poisson distribution has an arrival rate, n=3 customers per hour. The service times are distributed according to the negative exponential distribution with an average service rate, u=5 customers per hour.

The average time a customer can expect to wait in line, Wp is:

18 minutes
30 minutes
36 minutes
60 minutes

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