The average number of calls received by a switchboard in a 30-minute period is 15. a. What

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The average number of calls received by a switchboard in a 30-minute period is 15.

a. What is the probability that between 10:00 and 10:30 the switchboard will receive exactly 10 calls?

b. What is the probability that between 10.00 and 10:30 the switchboard win receive more than 9 calls but fewer than 15 calls?

c. What is the probability that between 10:00 and 10:30 the switchboard will receive fewer than 7 calls?

Related Book For answer-question

Probability and Statistics for Engineers and Scientists

ISBN: 978-0495107576

3rd edition

Authors: Anthony Hayter

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Posted Date: Jan 14, 2021 11:09 PM

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The average number of calls received by a switchboard in a 30-minute period is 15. a. What

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Probability and Statistics for Engineers and Scientists

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