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You are given the following joint probability function for the random variables X and Y. p(0, 0) = 0.18, p(0, 1) = 0.42, p(1, 0) = 0.12, p(1, 1) = 0.28. (a) Find the marginal PF's of X and Y (b) Determine whether or not X and Y are independent. (c) Find the conditional PF of Y given X = 1. (d) Find the PFs of Z =max(X, Y) and W =min(X, Y)