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In: Statistics and Probability

Three white and three black balls are distributed in two urns in such a way that...

Three white and three black balls are distributed in two urns in such a way that each contains three balls. We say that the system is in state i,i = 0, 1, 2, 3, if the first urn contains i white balls. At each step, we draw one ball from each ufn and place the ball drawn from the first urn into the second, and conversely with the ball from the second urn. Let Xq denote the state of the system after the Cth step. Explain why (X,. n 0, 1. 2. ...) is a Markov chain and calculate its transition probability matrix.

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