Operations Management
17th Edition
ISBN: 9781259142208
Author: CACHON, Gérard, Terwiesch, Christian
Publisher: Mcgraw-hill Education,
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Chapter 17, Problem 7CQ
Summary Introduction
To determine: Whether implied utilization is increased due to polling strategy in Erlang loss model is true or false?
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Consider two separate systems. One has an interarrival time of two hours andthe other an interarrival time of four hours. If the two systems are combined such that thecombined system’s demand is the sum of the demands from the two original systems,what is the interarrival time for the combined system?
The small mail-order firm Sea’s Beginning has onephone line. An average of 60 people per hour call inorders, and it takes an average of one minute to handlea call. Time between calls and time to handle calls areexponentially distributed. If the phone line is busy, Sea’sBeginning can put up to c 2 1 people on hold. If c 2 1people are on hold, a caller gets a busy signal and calls acompetitor. Sea’s Beginning wants only 1% of all callersto get a busy signal. How many people should it be ableto put on hold, that is, what is the required value of c?
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* true or false?
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