Question: Find the expected value, the variance, and the standard deviation, when they exist, for each probability density function. f(x) = X 12 16 3x if

Find the expected value, the variance, and the standard deviation, when they exist, for each probability density function. f(x) = X 12 16 3x if 0 x 2 if x

f(x) = X 12 16 3x if 0 x 2 if x > 2

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