Both please !

ir best submission for each question part is used for your score. [-/12.5 Points] DETAILS WANEFMAC6 P.3.004. Find the expected value E(X), the variance Var(X) and the standard deviation o(X) for the density function. (Round your answers to four decimal places.) f(x) - 5x on 0. V 2/5 E(X) var(X) = a(X) 2. [-/12.5 Points] DETAILS WANEFMAC6 P.3.007. Find the expected value E(X), the variance Var(X) and the standard deviation o(X) for the density function. (Round your answers to four decimal places.) f(x) = ex on [0, In 2] E(X) = Var(X) o (X) =