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Math Help - hello. i need help on this problem on joint probabiltiy

  1. #1
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    hello. i need help on this problem on joint probabiltiy

    prove that X and Y are independent if and only if fx|y(x|y)= fx (x) for all x and y.
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  2. #2
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    Re: hello. i need help on this problem on joint probabiltiy

    f_{X|Y}(x|y)=\frac{f_{X,Y}(x,y)}{f_Y(y)}

    X and Y independent \implies f_{X,Y}(x, y)=f_X(x)f_Y(y)
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