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Suppose we have a random variable, X, with pmf, p(x)=kx^2 for x=1,2,3. (a) Find k such that p(x) is a valid pmf. (b) Find

Suppose we have a random variable, X, with pmf, p(x)=kx^2 for x=1,2,3. (a) Find k such that p(x) is a valid pmf. (b) Find the CDF of X? (c) mean and Standard deviation of X

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