Engineers want to design seats in commercial aircraft so that they are wide enough to fit 99% of all adults ( Accommodating 100% of adults would require very wide seats that would be much too expensive.) assume adults have hip widths that are normally distributed with a mean of 14.3 inches. and a standard deviation of 1.1 inches. Find P99. That is, find the hip width for adults to separates the smallest 99% from the largest 1%. What is the maximum hip width that is required to satisfy the requirement of fitting 99% of adults