試卷名稱:無年度 - 主題課程_理工學院機率論:多元隨機變數#107950
科目:主題課程專用
(5%) Let X and Y have the joint probability density function f(x,y)=2, 0≤x≤y≤1. Which of the following is correct?
(A) E[X] = 1
(B) E[Y] = 1/2
(C) E[Y2] =1/2
(D)Pr(o sX sY,O≤Y≤
=1/2
(E) None of these