Suppose that the average number of calls coming into a local store with many telephone lines is 2 per hour during working hours (from 9am to 7pm). If we wish to model these incoming calls as a Poisson process, a) What assumptions must we make? b) If these assumptions hold, how many calls can we expect in a day? c) What is the probability of having three calls by noon? d) What is the probability of having the first call after 10:30 am?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 9ECP: A random number generator selects two integers from 1 to 30. What is the probability that both...
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Suppose that the average number of calls coming into a local store with many telephone lines

is 2 per hour during working hours (from 9am to 7pm). If we wish to model these incoming

calls as a Poisson process,

a) What assumptions must we make?

b) If these assumptions hold, how many calls can we expect in a day?

c) What is the probability of having three calls by noon?

d) What is the probability of having the first call after 10:30 am?

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