Let X and Y be continuous randoun variables with the joint probability density function, 0 ≤x<ㆀ,0

問題詳情

Let X and Y be continuous randoun variables with the joint probability density function

, 0 ≤x<ㆀ,0≤y<∞, where c is a constant. Then c= (a)

E(XY2)= (b) ,and cov(X,Y)= (c) . Given the information that X = x, the

conditional probability density function of Y is

= (d) . Now we let Z = X+Y

with

the probability density function and.

the corresponding mnoment generating function.Then

= (e) and My(t) = (f) .

【題組】(a)

X(A)物質X匱乏時，冰棒即是美食☆ →...