Tram's advice averages 10 minutes per caller but varies according to an exponential distribution. The average time

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Tram's advice averages 10 minutes per caller but varies according to an exponential distribution. The average time between calls is 25 minutes, exponentially distributed. Generating calls in this local market is difficult, so Tram doesn't want to lose any calls to busy signals. The radio station has only three telephone lines. What is the probability that a caller receives a busy signal?
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Foundations Of Operations Management

ISBN: 9780133251661

4th Canadian Edition

Authors: Larry P. Ritzman, Lee J. Krajewski, Manoj K. Malhotra, Robert D. Klassen

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