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Please include all details: 4. (15 points) X and Y have the joint PDF Be-(4x+3y) fx (x, y) = x20, y20 0 otherwise (a) find

Please include all details:

4. (15 points) X and Y have the joint PDF Be-(4x+3y) fx (x, y) = x20, y20 0 otherwise (a) find out B. (b) what's the minimum mean square error estimation of X given X>1/2

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