Suppose that a random variable Z has mean E(X) = 17 and variance Var(X) = 9, but

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Suppose that a random variable Z has mean E(X) = 17 and variance Var(X) = 9, but its probability distribution is unknown. Use Chebyshev's Inequality to estimate a lower bound for
(a) Pr(11 < Z < 23).
(b) Pr(10 < Z < 24).
(c) Pr(8 < Z < 26).
Distribution
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