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Q60Section ST (Statistics (Q11–Q65))60 of 65

Two-step mean of a Markov chain

Let {Xn}n≥1\{X_n\}_{n\ge1} be a time homogeneous discrete time Markov chain with state space {0,1,2}\{0,1,2\} and transition probability matrix (01212 121414 121414)\begin{pmatrix} 0 & \frac12 & \frac12 \ \frac12 & \frac14 & \frac14 \ \frac12 & \frac14 & \frac14 \end{pmatrix}. If P(X0=0)=P(X0=1)=14P(X_0 = 0) = P(X_0 = 1) = \frac14, then 32E(X2)32 E(X_2) equals ________ (in integer).

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