The random variable x has a density function fx 4xe-2x if

The random variable X has a density function

f(x) = 4xe^(-2x) if 0 < x < infinity , 0 otherwise

Compute the variance of X.

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The random variable x has a density function fx 4xe-2x if : the random variable x has a density functionfx 4xe-2x if 0 lt x lt infinity 0 otherwisecompute the variance of

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