Let X be a random variable for which P[X = 40] = 1/6 & P[X = -50] = 1/6 and Y be a random variable for which P[Y = 5] = 244/495 & P[Y = -5] = 251/495 and let Z = 3X - Y + 10 assuming X & Y are independent, the E(Z) & Var(Z) are closest to. |

Last modified: Wed May 13 12:29:11 EDT 1998