A normal population has mean μ=9 and standard deviation σ=5. (a) What proportion of the population is less than 20? (b) What is the probability that a randomly chosen value will be greater than 5? Round the answers to four decimal places.

A normal population has mean μ=9 and standard deviation σ=5. (a) What proportion of the population is less than 20? (b) What is the probability that a randomly chosen value will be greater than 5? Round the answers to four decimal places.

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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Question

A normal population has mean μ=9

and standard deviation σ=5.

(a) What proportion of the population is less than 20?

(b) What is the probability that a randomly chosen value will be greater than 5?

Round the answers to four decimal places.

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Expert Solution

Step 1: Information given is

Mean(μ)=9

standard deviation( $straight sigma$ )=5

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