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Unformatted text preview: SUNY at Albany  Department of Economics F Distribution Eco 320 Economic Statistics SUNY at Albany  Department of Economics Eco 320 Economic Statistics FDistribution 0.0 0.5 1.0 1.5 2.0 2.5 3.0 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 F (1, 1) F (2, 2) SUNY at Albany  Department of Economics Eco 320 Economic Statistics FDistribution 0.0 0.2 0.4 0.6 0.8 1.0 1.2 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 F (2, 10) F (10, 2) SUNY at Albany  Department of Economics Eco 320 Economic Statistics FDistribution 0.0 0.2 0.4 0.6 0.8 1.0 1.2 1.4 1.6 0.0 1.0 2.0 3.0 4.0 5.0 6.0 7.0 F (2, 2) F (10, 2) F (50, 50) 1. F Distribution A. Let ? 1 , ? 2 , , ? be a random sample of size m from a normal distribution X~N( , 2 ) , and let ? 1 , ? 2 , , ? be a random sample of size n from a normal distribution Y~N( , 2 ) . Assume that these two samples are independent. We want to find out whether 2 = 2 . B. Since we cannot directly observe the two population variances, we use their sample estimator 2 = ( ) 1 and 2 = ( ) 1 C. Statistical theory shows that if...
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 Spring '11
 Chan
 Economics

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