Let X and Y be two independent random variables with x= 140, Wy = -30, Ox = 13, and Oy = 3. (a) What is the expected value of 8 X -5 Y -100. Submit Answer Tries 0/99 (b) What is the variance of 8 X -5 Y -100. Submit Answer Tries 0/99 (c) What is the standard deviation of 8 X -5 Y -100. (Please include 2 decimals) Submit Answer | Tries 0/99 (d) For what part(s) of (a), (b), and (c) do we need the independence condition of X and Y ? Choose the correct answer(S): (a ) v (b) Submit Answer Tries 0/99