24. The sampling distribution of the ratio of independent sample variances extracted from two normal populations withequal variances is the _____.a.χ2distributionb.normal distributionc.Zdistributiond.tdistributionANSWER:c

POINTS:1DIFFICULTY:EasyREFERENCES:Inferences about Two Population VariancesLEARNING OBJECTIVES:MBST.ASWC.18.11.02 - 11.2NATIONAL STANDARDS:United States - Business Program.1: - Reflective ThinkingKEYWORDS:Bloom's: Knowledge25. The 95% confidence interval estimate for a population variance when a sample variance of 30 is obtained from asample of 12 items is _____.b

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POINTS:1DIFFICULTY:ModerateREFERENCES:Inferences about a Population VarianceLEARNING OBJECTIVES:MBST.ASWC.18.11.01 - 11.1NATIONAL STANDARDS:United States - Business Program.1: - Reflective ThinkingKEYWORDS:Bloom's: Comprehension26. The 99% confidence interval estimate for a population variance when a sample standard deviation of 12 is obtainedfrom a sample of 10 items is _____.c

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POINTS:1DIFFICULTY:ModerateREFERENCES:Inferences about a Population VarianceLEARNING OBJECTIVES:MBST.ASWC.18.11.01 - 11.1NATIONAL STANDARDS:United States - Business Program.1: - Reflective ThinkingKEYWORDS:Bloom's: Comprehension27. The 90% confidence interval estimate for a population standard deviation when a sample variance of 50 is obtained