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Question: the question is in the second photo needing work by...

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The question is in the second photo needing work by hand. Instructions in first photo.
Xi,..,. ,Xn are random variables. Х1 . . . ,. n have zero. mea ns and variances equal to σ2. Also, cou(Xi, Xs)-|σ2 ifit j. Compute the covariance and correlation. Suppose


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