(1) Solve the following problems. (a) [1pt] The probability mass function of some random variable X is P(X = x) = for x =
(1) Solve the following problems. (a) [1pt] The probability mass function of some random variable X is P(X = x) = " for x = 1, 2, ...,5. What is the constant k? (b) [1pt] Use the same X as the problem (a). What is P(2 1)
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