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If the random variables X and Y are independent, which of the following must be true? (a) E[XY ] > E[X]E[Y ] (b) Cov(X,Y) <0
If the random variables X and Y are independent, which of the following must be true?
(a) E[XY ] > E[X]E[Y ] (b) Cov(X,Y)<0
(b) Cov(X,Y)<0
(c) P(X=0|Y =0)=0 (d) Cov(X,Y)=0
(d) Cov(X,Y)=0
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Algebra
Authors: Marvin L Bittinger
12th Edition
0321922913, 9780321922915
