Question: Let the time between e-mail messages during work hours be exponentially distributed with a mean of 25 minutes. a. Calculate the rate parameter . b.

Let the time between e-mail messages during work hours be exponentially distributed with a mean of 25 minutes.
a. Calculate the rate parameter λ.
b. What is the probability that you do not get an e-mail for more than one hour?
c. What is the probability that you get an e-mail within 10 minutes?

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