3. Lot 21 , 272,... be a sequence of random variables, and suppose that for n = 2, 3,..., the distribution of Z is as follows: 1312" = 1/11} = 1 1fn2,P(Z,. = n)=1fn2. (a) Does there most a constant c to which the sequence converges in probability? (a) Does there exist a constant I: to which the sequence converges in quadratic mean