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(a) Using the definition of R, population correlation coefficient of r and y, show that Cov(1, y) = (1 n RSxSy n (b) Using the

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(a) Using the definition of R, population correlation coefficient of r and y, show that Cov(1, y) = (1 n RSxSy n (b) Using the result in (a), show that 2 2BRSSy + B2 52 El(y - Bx) ] = V n I(M - Bai) = (1 - n iESPopulation correlation of r and y: Li(mi - xu) (yi - yu) R. = (N - 1)S.Sy

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