how to test for equal population variance. In the same setting, perform a two- sided test...

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how to test for equal population variance. In the same setting, perform a two- sided test on Ho: -20%=0. Derive the test statistic, define the critical value you need, and specify the rejection rules. [Hint: (1) F=F(d₁.da) where U₁ and U₂ have y distributions with d, and d₂ degrees of freedom respectively, and U₁ and U₂ are independent. (2) Cochran's Theorem: (-1²~x²(n-1).] how to test for equal population variance. In the same setting, perform a two- sided test on Ho: -20%=0. Derive the test statistic, define the critical value you need, and specify the rejection rules. [Hint: (1) F=F(d₁.da) where U₁ and U₂ have y distributions with d, and d₂ degrees of freedom respectively, and U₁ and U₂ are independent. (2) Cochran's Theorem: (-1²~x²(n-1).]

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