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9) Engineers want to design seats in commercial aircraft so that they are wide enough to fit 90% of all males. (Accommodating 100% of males

9) 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 14.7 in. and a standard deviation of 0.8 in. Find P90. 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 P90 = ( ) in.

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