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6.86 The length of time, in seconds, that a computer user takes to read his or her e-mail is distribute as a lognormal random variable with µ = 1.8 and o² =4.0. al) What is the probability that a user reads e-mail for more than 20 seconds? a2) What is the probability that a user reads e-mail for more than a minute?

6.86 The length of time, in seconds, that a computer user takes to read his or her e-mail is distribute as a lognormal random variable with µ = 1.8 and o² =4.0. al) What is the probability that a user reads e-mail for more than 20 seconds? a2) What is the probability that a user reads e-mail for more than a minute?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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do a2) please

6.86 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 µ = 1.8 and o² = 4.0. al) What is the probability that a user reads e-mail for more than 20 seconds? a2) What is the probability that a user reads e-mail for more than a minute? b) What is the probability that a user reads e-mail for a length of time that is less than the mean of the underlying lognormal distribution?
Transcribed Image Text:6.86 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 µ = 1.8 and o² = 4.0. al) What is the probability that a user reads e-mail for more than 20 seconds? a2) What is the probability that a user reads e-mail for more than a minute? b) What is the probability that a user reads e-mail for a length of time that is less than the mean of the underlying lognormal distribution?
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