Two fair six sided die are rolled, one called X the other Y. Evaluate the expected value of the difference of these two random variables, i.e., E((X-Y))
I'm not sure about this but I think the expected value of the difference should be 0. Since E(x) = 3.5 and E(y) = 3.5 so E(x-y) = 0
Am I interpreting this correctly?