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4. Suppose the joint function of two random variables X, Y is COIN (a + 2y), if 0 4. Suppose the joint function of two

4. Suppose the joint function of two random variables X, Y is COIN (a + 2y), if 0

4. Suppose the joint function of two random variables X, Y is (b) (c) 0, Find the marginal density of X. Find the marginal density of Y. Find < Y). elsewhere.

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