問題詳情

111. Let X be a continuous random variable with density function


 Calculate the value of p such that E(X) = 2.
(A) 1
(B) 2.5
(C) 3
(D) 5
(E) There is no such p.

參考答案

答案:C

統計:A:0,B:0,C:0,D:0,E:0

難度:計算中