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Prove that the cummulative distribution function (cdf) of a random variable X is non-decreasing, that is, Fx (x1) Fx(x2) whenever x1 < x2. Hint:

Prove that the cummulative distribution function (cdf) of a random variable X is non-decreasing, that is, Fx (x1) Fx(x2) whenever x1 < x2. Hint: recall that P(A) S Ulm P(B) whenever A B

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