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True and False (Justify) 1. The OLS is the only estimator with the property that e; = 0. (10%) Problems 1. Show that e;X;

 

True and False (Justify) 1. The OLS is the only estimator with the property that e; = 0. (10%) Problems 1. Show that e;X; = 0. (10%) 2. Show that Ew; = 0. (wi 3. Show that 4. Wooldridge: 2.5 (10%). 5. Wooldridge: 2.8 (25%). 6. Wooldridge: 2.12 (25%). = (X-X) (x-T)) (10%) wiX; = 1. (10%)

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