2. Suppose that Xn, n 2 1 are i.i.d. random variables with P(X = -1) = 1/2, P(X = 0) = 1/8, P(X =1) = 1/4, P(X = 2) = 1/8. Let Sn = En_ Xi with So = 0. Let T be defined as T = min{n : Sn 2 10 or Sn