問題詳情

174. An insurance company has an equal number of claims in each of three territories. In each territory, only three claim amounts are possible: 100, 500, and 1000. Based on the company’s data, the probabilities of each claim amount are:


  Calculate the standard deviation of a randomly selected claim amount.
(A) 254
(B) 291
(C) 332
(D) 368
(E) 396

參考答案

答案:A

統計:A:0,B:0,C:0,D:0,E:0

難度:計算中