# A study by the Information Technology department at WPU revealed company employees receive an average of four e-mails per hour....

A study by the Information Technology department at WPU revealed company employees receive an average of four e-mails per hour. Assume the arrival of these e-mails is approximated by the Poisson distribution.
(a) What is the probability, Prof. Smith, received exactly one e-mail between 4pm and 5pm yesterday?
(b) What is the probability he did not receive any e-mail during this period?
(c) What is the probability hereceived ten or more e-mails during the same period?

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