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Question 2 There is positive bias in 2 when X3 is omitted in estimating the equation Y = 1 + 32 X2 + B3X3 +

Question 2 There is positive bias in 2 when X3 is omitted in estimating the equation Y = 1 + 32 X2 + B3X3 + u, where Cov(X2, X3) > 0 and B3

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