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25-05-2023
Mathematics

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Let X be a random variable with pdf f(x) = (x - 5)/18, 5 < x < 11, zero elsewhere. 1. Compute the mean and standard deviation of X. 2. Let X be the mean of a random sample of 40 observations having the same distribution above. Use the C.L.T. to approximate P(8.2 < X < 9.3).

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