The number of hits on a certain website follows a Poisson distribution with a mean rate of 4 per minute. (a)  What is the probability that 5 messages are received in a given minute? (b)  What is the probability that fewer than 3 messages are received in a period of 30 seconds?

College Algebra
10th Edition
ISBN:9781337282291
Author:Ron Larson
Publisher:Ron Larson
Chapter8: Sequences, Series,and Probability
Section8.7: Probability
Problem 11ECP: A manufacturer has determined that a machine averages one faulty unit for every 500 it produces....
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The number of hits on a certain website follows a Poisson distribution with a mean rate of 4 per minute.

(a)  What is the probability that 5 messages are received in a given minute?

(b)  What is the probability that fewer than 3 messages are received in a period of 30 seconds?

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