=+27. Suppose the integer-valued random variable Y stochastically dominates the integer-valued random variable X. Prove the bound

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=+27. Suppose the integer-valued random variable Y stochastically dominates the integer-valued random variable X. Prove the bound

πX − πY TV ≤ E(Y ) − E(X)

by extending inequality (7.7). Explicitly evaluate this bound for the distributions featured in Problems 19 through 23. (Hint: According to Problem 24, one can assume that Y ≥ X.)

180 7. Discrete-Time Markov Chains

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