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)Let X be a random variable with PDF f_{X}(x)=\left\{\begin{array}{cc} x / 4 & \text { for } 1 \leq x \leq 3 \\ 0 & \text { otherwise } \end{array}\right.
) Find ElX], P(A), fxA(T), and ELX|4]. -Let Y = X2. Find EY] and Var(Y)
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