Answer to Question #43494 in Statistics and Probability for sam

Question #43494

Find E(X) , var (X), and std deviation (x) if a random variable X is given by its density function f(x) , such that
f(x)=0, if x≤1
f(x)=(3/8) (x^2), if 0<x≤2
f(x)=0, if x>2

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