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walks to the top of a hill and then walks down again. The time he takes to walk up the hill is normally distributed with µ = 20 (minutes)  and σ = 3, whereas the time he takes to walk down the hill is normally distributed with µ = 15 and σ = 4. Assuming that the time taken for the uphill and downhill walks are  independent, what is the probability that his walk will last:   a) between 35 and 40 minutes?   b) less than half an hour?

walks to the top of a hill and then walks down again. The time he takes to walk up the hill is normally distributed with µ = 20 (minutes)  and σ = 3, whereas the time he takes to walk down the hill is normally distributed with µ = 15 and σ = 4. Assuming that the time taken for the uphill and downhill walks are  independent, what is the probability that his walk will last:   a) between 35 and 40 minutes?   b) less than half an hour?

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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Each morning a man goes for a walk. He walks to the top of a hill and then walks down again. The time he takes to walk up the hill is normally distributed with µ = 20 (minutes)  and σ = 3, whereas the time he takes to walk down the hill is normally distributed with µ = 15 and σ = 4. Assuming that the time taken for the uphill and downhill walks are  independent, what is the probability that his walk will last:  

a) between 35 and 40 minutes?  

b) less than half an hour?

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