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(10 points) If you do not remember our definitions of T; and Ti , please look them up! A Markov chain with state space {1,2,3,4) has transition matrix 2 3 H P = NO O 8 - 8 8 0 NA 3 0 30 4 60 15 (a) Let A be the event that the Markov chain reaches state 1 before state 4, A = {T1