Question: X is a discrete random variable with probability mass function p ( x ) = c x 2 p ( x ) = c x

X is a discrete random variable with probability mass function p ( x ) = c x 2 p ( x ) = c x 2 for x = 1 2 1 2 , 1 1 , 3 2 3 2 , 2 2 . Find the value of c. Find the expected value of X.

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