Question: The length of time, in seconds, that a computer user reads his (or her) e-mail is distributed as a lognormal random variable with p =

The length of time, in seconds, that a computer user reads his (or her) e-mail is distributed as a lognormal random variable with p = 1.8 and a2 = 4.0.

(a) What is the probability that the user reads the mail for more than 20 seconds more than a minute?

(b) What is the probability that the user reads the mail for a length of time that is equal to the mean of the underlying lognormal distribution?

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