Answer to Question #279153 in Economics for Ashita

Question

Let 𝛼1̂ and 𝛼2̂ be two independent unbiased estimators of the parameter 𝛼 with standard errors 𝜎1 and 𝜎2, respectively, with 𝜎1 ≠ 𝜎2 . The linear combination of 𝛼1̂ and 𝛼2̂ that yields an unbiased estimator of 𝛼 with the minimum variance is

Answer 1

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