The heights of a group of men averaged 69 inches and followed the normal curve. The 91st percentile height was 73.4 inches. Find the 9’th percentile height. Approximate the SD.
The heights of a group of men averaged 69 inches and followed the normal curve. The 91st percentile height was 73.4 inches. Find the 9’th percentile height. Approximate the SD.
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
The heights of a group of men averaged 69 inches and followed the normal curve. The 91st percentile height was 73.4 inches.
Find the 9’th percentile height.
Approximate the SD.
Expert Solution
Step 1
Solution:
Let X be the height of group of men.
Average height of men.
The 91st percentile height was 73.4 inches that is P( X< 73.4)= 0.91.
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