OPERATION MANAGEMENT
2nd Edition
ISBN: 9781260242423
Author: CACHON
Publisher: MCG
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Chapter 17, Problem 3CQ
Summary Introduction
To determine: The following which increases the lost demand in Erlang loss model.
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10. Customers arrive an average of 8 per hour and an average of 12 customers can be
served in an hour. Assume this is an M/M/1 model. (Noteshaper Quick Start #18 - #20)
what is the system utilization?
what is the average length of the line?
what is the average number of customers in the system?
what is the average amount of time spent waiting in the line?
what is the average amount of time a customer spends in the system?
what is the probability of no customers in the system?
11. Customers arrive at a ferry ticket office at the rate of 18 per hour on Monday mornings.
This can be described as a M/M/1 model. Selling the tickets and providing general
information takes an average of 2 minutes per customer. One ticket agent is on duty on
Mondays. (Noteshaper Scenario #34)
a. What is the average length of the line on Monday mornings?
b. On average, how long does a customer wait to buy a ticket on Monday mornings
(in minutes)?
c. How long does it take to successfully buy a ticket on Monday…
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