A manufacturer knows that their items have a normally distributed lifespan, with a mean of 13.1 years, and standard deviation of 2.2 years.If you randomly purchase one item, what is the probability it will last longer than 9 years?

MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
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A manufacturer knows that their items have a normally distributed lifespan, with a mean of 13.1 years, and standard deviation of 2.2 years.

If you randomly purchase one item, what is the probability it will last longer than 9 years?

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