A company is reviewing the number of telephone lines available for customer support. The average number of

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A company is reviewing the number of telephone lines available for customer support. The average number of calls received per day is three calls during a five-minute period. Estimate the proportion of phone calls that cannot be answered during a five-minute period: 

(a) If the company installs four lines 

(b) If the company installs five lines.

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Business Statistics Using Excel

ISBN: 9780199659517

2nd Edition

Authors: Glyn Davis, Branko Pecar

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