IS . Let y be a random draw from the following box of tickets: 3 3 2 4 3 Box with 15 tickets Note: the number on the top of each ticket tells you how many copies of that ticket are in the box. Find E(Y?). \\U. Let W be a random random variable with the fol- lowing probability mass function. -10 2 p(w) = 1+2/e if w = -1,0 or 1 0 otherwise Find var(W)