How does one prove that E_x(E(Y|X))=u_y?

where u_y is the partial mean of y

thanks!

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- January 31st 2011, 02:43 PMmorganforExpected value proof
How does one prove that E_x(E(Y|X))=u_y?

where u_y is the partial mean of y

thanks! - January 31st 2011, 03:33 PMharish21
What kind of Random Variables are X and Y?

Wikipedia proves your question if the random variables are discrete . Try to solve it for the continuous case and reply back with an attempt if you are stuck. - January 31st 2011, 08:50 PMmatheagle
E_x(E(Y|X))=E(Y)