Let X₁, X₂ be independent random variables with mean and variance o, and a is a constant. We also know that μ = o. Suppose we have two estimators of μ: =1=1/(X₁ + X₂) 2 = X₁ + X₂ ) Calculate the bias of each estimator. ) What is the variance of each estimator? ) Calculate the relative efficiency of 2 with respect to 1. Determine the constant a such that μ2 ecomes a more efficient estimator.

Calculus For The Life Sciences
2nd Edition
ISBN:9780321964038
Author:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Publisher:GREENWELL, Raymond N., RITCHEY, Nathan P., Lial, Margaret L.
Chapter1: Functions
Section1.2: The Least Square Line
Problem 3E: For the following table of data. x 1 2 3 4 5 6 7 8 9 10 y 0 0.5 1 2 2.5 3 3 4 4.5 5 a. draw a...
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Let X₁, X2 be independent random variables with mean μ and variance o2, and a is a constant.
We also know that μ = o. Suppose we have two estimators of μ:
P1 = (X₁ + X₂)
A₂ = X₁ + X₂
a) Calculate the bias of each estimator.
b) What is the variance of each estimator?
c) Calculate the relative efficiency of 2 with respect to ₁. Determine the constant a such that f
becomes a more efficient estimator.
Transcribed Image Text:Let X₁, X2 be independent random variables with mean μ and variance o2, and a is a constant. We also know that μ = o. Suppose we have two estimators of μ: P1 = (X₁ + X₂) A₂ = X₁ + X₂ a) Calculate the bias of each estimator. b) What is the variance of each estimator? c) Calculate the relative efficiency of 2 with respect to ₁. Determine the constant a such that f becomes a more efficient estimator.
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