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Operations Research Models and Methods
Problems Section
Problems for Queuing Models
 - Arrival/Service Rates

After observing a queuing system with three servers for some time, an analyst estimates that, on the average, the efficiency of the servers is 2/3. The average number in the queue is 3. Customers are in the queuing system for an average of 30 minutes each. Although the time between arrivals and the service times are random variables, they do not seem to depend on the number of customers in the system. Arriving customers never balk.

Compute the arrival rate into the system and service rate of each server.


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Operations Research Models and Methods
by Paul A. Jensen
Copyright 2001 - All rights reserved