Engineers want to design seats in commercial aircraft so that they are wide enough to fit 90 ​% of all males.​ (Accommodating 100% of males would require very wide seats that would be much too​ expensive.) Men have hip breadths that are normally distributed with a mean of 14.9    in. and a standard deviation of 1.2   in. Find Upper P 90 . That​ is, find the hip breadth for men that separates the smallest 90 ​% from the largest 10 ​%. The hip breadth for men that separates the smallest 90 ​% from the largest 10 ​% is Upper P 90 equalsnothing   in.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Engineers want to design seats in commercial aircraft so that they are wide enough to fit

90
​%

of all males.​ (Accommodating 100% of males would require very wide seats that would be much too​ expensive.) Men have hip breadths that are normally distributed with a mean of

14.9
  

in. and a standard deviation of

1.2
 

in. Find

Upper P 90
.

That​ is, find the hip breadth for men that separates the smallest

90
​%

from the largest

10
​%.
The hip breadth for men that separates the smallest
90
​%

from the largest

10
​%

is

Upper P 90

equalsnothing

 

in.

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