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6.19 Let X1,X2, ., X64 be a random sample from a distribution with pdf f (x) = 2(1 - X), OSXS1 0, otherwise a. Find

6.19 Let X1,X2, .", X64 be a random sample from a distribution with pdf f (x) = 2(1 - X), OSXS1 0, otherwise a. Find the mean of X,. b. Find the variance of X,. c. Use the central limit theorem to find an approximate probability of P(0.33

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