1. We draw two numbers at random without replacement from the set {1, 2, 3, 4,5}. Denote the first number, X, and the second number, Y. Thus, by sampling without replacement, the two numbers must be different. (a) Find the mean of X, px, and the variance of X, ox. (b) A game is played such that the winnings W is the minimum of the two numbers X and Y that are drawn. Calculate the mean of W, that is /w