6. An internal study by the IT department at a company revealed company employees receive an average of 3.4 non-work-related e-mails per hour. Assume the arrival of these e-mails is approximated by the Poisson distribution. (a) What is the probability a random employee received exactly 3 non-work-related e-mails between 4 p.m. and 5 p.m. yesterday? (b) What is the probability she received 5 or more non-work-related e-mails during the same period? (c) What is the probability she received three or less non-work-related e-mails during the period?
6. An internal study by the IT department at a company revealed company employees receive an average of 3.4 non-work-related e-mails per hour. Assume the arrival of these e-mails is approximated by the Poisson distribution. (a) What is the probability a random employee received exactly 3 non-work-related e-mails between 4 p.m. and 5 p.m. yesterday? (b) What is the probability she received 5 or more non-work-related e-mails during the same period? (c) What is the probability she received three or less non-work-related e-mails during the period?
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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