Question: Let X be a continuous random variable with density function f(x) f(x)={7e^(7x) x>0,0 otherwise} The mean of X is1/7. FindVar(X)Variance = Hint : Integration by

LetXbe a continuous random variable with density functionf(x) f(x)={7e^(7x) x>0,0 otherwise}

The mean ofXis1/7. FindVar(X)Variance =

Hint: Integration by parts!

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