Biology Forums - Study Force

A biology professor responds to some student questions by e-mail. The probability model below describes the number of e-mails that the professor may receive from students during a day.

a. How many e-mails should the professor expect to receive each day?

b. What is the standard deviation?

c. If it takes the professor an average of ten minutes to respond to each e-mail, how much time should the professor expect to spend responding to student e-mails each day?

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