Question: Random variables X and Y have joint PMF given by the following table: (a) Find a and b to minimize the mean square estimation error.

Random variables X and Y have joint PMF given by the following table:
Random variables X and Y have joint PMF given by
Random variables X and Y have joint PMF given by

(a) Find a and b to minimize the mean square estimation error.
(b) What is the minimum mean square error e*L?

z=-1 1-3/16 1/16-0 x=011/6 1/6 1/6 0 1/8 1/8 YL(X) = aX + b.

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