Mathematics, 16.03.2020 23:25 allen93
Let X1,X2X7 denote a random sample from a population having mean μ and variance σ. Consider the following estimators of μ:
θ1=X1+X2++X7 / 7
θ2= (2X1-X3+X5) / 2
a. Is either estimator unbiased?
b. Which estimator is best? In what sense is it best? Calculate the relative efficiency of the 2 estimtors.
Answers: 2
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