Exam 13: Inference About Comparing Two Populat

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In comparing two population means the statistic under consideration is In comparing two population means the statistic under consideration is   . .

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Antioxidants A food processor wants to compare two antioxidants for their effects on retarding spoilage. Suppose 16 cuts of fresh meat are treated with antioxidant A and 16 are treated with antioxidant B, and the number of hours until spoilage begins is recorded for each of the 32 cuts of meat. The results are summarized in the table below Antioxidants A food processor wants to compare two antioxidants for their effects on retarding spoilage. Suppose 16 cuts of fresh meat are treated with antioxidant A and 16 are treated with antioxidant B, and the number of hours until spoilage begins is recorded for each of the 32 cuts of meat. The results are summarized in the table below   {Antioxidants Narrative} Develop the 95% confidence interval estimate of the ratio of the two population variances. {Antioxidants Narrative} Develop the 95% confidence interval estimate of the ratio of the two population variances.

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The test for the equality of two population variances is based on the:

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TV Sex A survey of 1,500 Canadians reveals that 945 believe that there is too much sex on television. In a survey of 1,500 Americans, 810 believe that there is too much television sex. {TV Sex Narrative} Briefly explain what the interval estimate tells you.

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The test statistic employed to test The test statistic employed to test   is   is F -distributed with v <sub>1</sub> = n <sub>1</sub> - 1 and v <sub>2</sub> = n <sub>2</sub> - 1 degrees of freedom if the two populations are F -distributed. is The test statistic employed to test   is   is F -distributed with v <sub>1</sub> = n <sub>1</sub> - 1 and v <sub>2</sub> = n <sub>2</sub> - 1 degrees of freedom if the two populations are F -distributed. is F -distributed with v 1 = n 1 - 1 and v 2 = n 2 - 1 degrees of freedom if the two populations are F -distributed.

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