Please ehlp

Problem #2 [30 21's.] (Est. time - 12 min) A discrete random variable has the following pmf: _ 1-9 a) Suppose n values of this random variable were observed, of which no were 05, m were 15 and n2 were 25. Derive the maximum likelihood estimator for 6. b) Suppose the following sequence was observed 1, 1, 0, 0, 0, 2, 1, 2, 0, 1, 2, 0, 1, 1, O, 1, 1, 1, 1, 0, 2, 1, 1, 1, 2, 0, 1, 0, 2, 1. Use the estimator derived in part (a) to estimate the value of Qfor this sequence. c) Compute the mean obeased on the observed sequence. d) Compute the mean and the variance obeased on the estimated value of the parameter 6