Question

A service station has one gasoline pump. Cars wanting gasoline arrive according to a Poisson process at a mean rate of 15 per hour. However, if the pump already is being used, these potential customers may balk (drive on to another service station). In particular, if there are n cars already at the service station, the probability that an arriving potential customer will balk is n/3 for n = 1, 2, 3. The time required to service a car has an exponential distribution with a mean of 4 minutes.
(a) Construct the rate diagram for this queueing system.
(b) Develop the balance equations.


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  • CreatedSeptember 22, 2015
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