4 and 5

QUESTION 4 X and Y are jointly Gaussian with E[X] = 1, E[Y] = 2, Var[X] = 1, Var[Y] = 4, PX, Y = - 2 : In this scenario, the MMSE estimator is of the form MMSE(y) = . Determine a and enter the answer, up to three decimal places. QUESTION 5 X and Y are jointly Gaussian with E[X ] = 1, E[Y] = 2, Var[X] = 1, Var[Y] = 4, Px,Y = -5. Determine the mean-squared error (MSE) of the MMSE estimator and enter the answer, up to three decimal places