Let X represent the number that occurs when an 8-sided red die is tossed and Y the number that occurs when an 8-sided green die is tossed. Complete parts (a) through (c) below (a) Find E(X + Y) E(X + Y) = 9 (Type an integer or a decimal, Do not round ) (b) Find E(X - Y) E(X - Y) = 0 (Type an integer or a decimal Do not round ) (C) Find E(XY) E(XY) = 20.3 (Type an integer or a decimal Do not round.)