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please give me answer in 10 min I will rate for sure Given an iid sample (X1i, X2i, Yi)._1, we estimate the simple regression model

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please give me answer in 10 min I will rate for sure

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Given an iid sample (X1i, X2i, Yi)._1, we estimate the simple regression model Y = By + XIBi + X2Bzte. Let Bo, 1, and 32 be the OLS estimators of Bi, B;, and B2. Define ei = Yi - Yi for Y. = Bo + XliBi + XziB2. Which of the following is/are true? (1) Et, Yiei = 0 (1) ELI (X2i - X2)ei = 0 var (Y) = var (Y) + var(e) B1 = cov(X1, Y) /cov(X1, X1)

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