試題詳解

165. The profits of life insurance companies A and B are normally distributed with the same mean. The variance of company B's profit is 2.25 times the variance of company A's profit. The 14th percentile of company A’s profit is the same as the pth percentile of company B’s profit.

Calculate p.
(A) 5.3
(B) 9.3
(C) 21.0
(D) 23.6
(E) 31.6