Question: 3. Find the variance of X, the random variable with probability mass function p(x) = B! |x 3| + 1 /28 x =

3. Find the variance of X, the random variable with probability mass function p(x) = B! |x − 3| + 1 " /28 x = −3, −2, −1, 0, 1, 2, 3 0 otherwise.

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