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3. The score of a student in an exam is assumed to be a random variable with mean 75. (a) Use Markov's inequality to give

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3. The score of a student in an exam is assumed to be a random variable with mean 75. (a) Use Markov's inequality to give a bound on the probability that the score will exceed 85. (b) Suppose in addition that the variance of the score is equal to 25. Use Chebyshev's inequality to give a bound on the probability that the score will be between 65 and 85

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