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OpenStudy (anonymous):
The joint pdf of the random variables X and Y is f X,Y (x, y) = kx, 0 < x < 1, 0 < y < 1 − x a. Draw the region and determine the value of k. (5) b. Find P(X + Y < 0.5). (5) c. Find E(X + Y). (5) anyone who knows statistics here?
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