Solved: The length of time, in seconds, that a computer
Chapter 6, Problem 6.86(choose chapter or problem)
The length of time, in seconds, that a computer user takes to read his or her e-mail is distributed as a lognormal random variable with \(\mu = 1.8\) and \(\sigma^2 = 4.0\).
(a) What is the probability that a user reads e-mail for more than 20 seconds? More than a minute?
(b) What is the probability that a user reads e-mail for a length of time that is equal to the mean of the underlying lognormal distribution?
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