[商管] [統計]-高應大98-金資所

[aiaorry (我不想皺眉頭)]

Let X and Z be two independently distributed normal random variables, and let
Y = X^2 + Z

1. show that E(Y|X) = X^2

2. show taht E(Y) = 1

3. show that E(XY) = 0

4. show that Cov(X,Y) = 0

謝謝...


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