Answered: 4. X is a Normal random variable with a…

4. X is a Normal random variable with a mean of 5 and a standard deviation of 2. (a) What proportion of the population has X between 5.5 and 5.9? (b) What is the 30th percentile of X?

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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I cannot figure out how to do this, I've watched my teacher's lecture video many times and still don't understand.

4. X is a Normal random variable with a mean of 5 and a standard deviation
of 2.
(a) What proportion of the population has X between 5.5 and 5.9?
(b) What is the 30th percentile of X?

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