We are asked to derive the expected value of each of the above estimators conditional on X. it states that you can treat x1; x2.

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We are asked to derive the expected value of each of the above estimators conditional on X. it states that you can treat x1; x2…..xn and any expression that only involves these, such as xbar as constants. Then based on these, see if they are an unbiased estimator of beta1

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