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If X, and X2 are the means of independent random sample of sizes n and n2 from a normal population with the meanu and the variance o2.The minimum variance of the estimator w.X1 + (1 – w). X2 is

If X, and X2 are the means of independent random sample of sizes n and n2 from a normal population with the meanu and the variance o2.The minimum variance of the estimator w.X1 + (1 – w). X2 is

Algebra & Trigonometry with Analytic Geometry
Algebra & Trigonometry with Analytic Geometry
13th Edition
ISBN:9781133382119
Author:Swokowski
Publisher:Swokowski
Chapter10: Sequences, Series, And Probability
Section10.8: Probability
Problem 32E
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6. * If X and X2 are the means of independent random sample of sizes n and n2 from a normal population with the meanu and the variance o2.The minimum variance of the estimator w.X1 + (1 – w). X2 is - n2 ni + n2 nį + n2 None of all. ni + n2
Transcribed Image Text:6. * If X and X2 are the means of independent random sample of sizes n and n2 from a normal population with the meanu and the variance o2.The minimum variance of the estimator w.X1 + (1 – w). X2 is - n2 ni + n2 nį + n2 None of all. ni + n2
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