You may need to use the appropriate appendix table or technology to answer this question. According to a 2017 survey conducted by the technology market research firm The Radicati Group, U.S. office workers receive an average of 121 emails per day.t Suppose for a particular office the number of emails received per hour follows a Poisson distribution and that the average number of emails received per hour is seven. (Round your answers to four decimal places.)

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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You may need to use the appropriate appendix table or technology to answer this question.
According to a 2017 survey conducted by the technology market research firm The Radicati Group, U.S. office workers receive an average of 121 emails per day.t Suppose for a particular office the
number of emails received per hour follows a Poisson distribution and that the average number of emails received per hour is seven. (Round your answers to four decimal places.)
(a) What is the probability of receiving no emails during an hour?
(b) What is the probability of receiving at least three emails during an hour?
(c) What is the expected number of emails received during 15 minutes?
(d) What is the probability that no emails are received during 15 minutes?
Transcribed Image Text:You may need to use the appropriate appendix table or technology to answer this question. According to a 2017 survey conducted by the technology market research firm The Radicati Group, U.S. office workers receive an average of 121 emails per day.t Suppose for a particular office the number of emails received per hour follows a Poisson distribution and that the average number of emails received per hour is seven. (Round your answers to four decimal places.) (a) What is the probability of receiving no emails during an hour? (b) What is the probability of receiving at least three emails during an hour? (c) What is the expected number of emails received during 15 minutes? (d) What is the probability that no emails are received during 15 minutes?
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