Question: Question. The probability mass function of a discrete random variable X is as follows: p(2) = for x = 1, 2, 3. 12 a. Explain

Question. The probability mass function of a discrete random variable X is as follows: p(2) = for x = 1, 2, 3. 12 a. Explain why p(x) is a valid probability mass function. b. Find the cumulative distribution function (cdf) of X and draw a graph of the cdf of X. for x

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