(a) Construct the rate diagram for this queueing system. (b) Find the steady-state probability distribution of the number of cars at the station. (c) Find the expected waiting time (including service) for those cars that stay.
(a) Construct the rate diagram for this queueing system. (b) Find the steady-state probability distribution of the number of cars at the station. (c) Find the expected waiting time (including service) for those cars that stay.
A First Course in Probability (10th Edition)
10th Edition
ISBN:9780134753119
Author:Sheldon Ross
Publisher:Sheldon Ross
Chapter1: Combinatorial Analysis
Section: Chapter Questions
Problem 1.1P: a. How many different 7-place license plates are possible if the first 2 places are for letters and...
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Transcribed Image Text:9.
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
n
arriving potential customer will balk is for n = 1, 2, 3. The time required to service a car has an exponential
3
distribution with a mean of 4 minutes.
(a) Construct the rate diagram for this queueing system.
(b) Find the steady-state probability distribution of the number of cars at the station.
(c) Find the expected waiting time (including service) for those cars that stay.
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