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Two random variables, X and Y, are independent and each has a binominal distribution with success probability 0.7 and 4 trials. (a) Find the joint

Two random variables, X and Y, are independent and each has a binominal distribution with success probability 0.7 and 4 trials. (a) Find the joint probability mass function of X and Y. (b) Find P(X > Y) and P(X + Y 2 7). (c) Find E(XY) and Cov(X, Y)

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