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(5 points each.) The amplitudes of two signals X and Y have joint PDF: fxy(x, y) = exp(-x/2) . yexp(-y2) for x > 0, y

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(5 points each.) The amplitudes of two signals X and Y have joint PDF: fxy(x, y) = exp(-x/2) . yexp(-y2) for x > 0, y > 0 a) Are X and Y independent? b) Find the joint CDF of X and Y. c) Find the probability of event { X1/2 > Y} d) Find the correlation coefficient of X and Y

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