Chapter 12 – Inference about a Population Statistics for Management and Economics-Sixth Edition Gerald Keller – Brian Warrack Chapter 12 – Inference about a Population

©2003 Brooks/Cole, a division of Thomson Learning, Inc ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Excel t-Test Mean

Minitab One-Sample T: Packages ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Minitab One-Sample T: Packages

©2003 Brooks/Cole, a division of Thomson Learning, Inc ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Figure 12.1 Sampling distribution of the test statistic for Example 12.1

Excel t-Test: Estimate ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Excel t-Test: Estimate

Minitab One Sample T: Returns ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Minitab One Sample T: Returns

©2003 Brooks/Cole, a division of Thomson Learning, Inc ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Figure 12.2

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Excel Chi Squared Test: Variance ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Excel Chi Squared Test: Variance

Figure 12.4 Sampling distribution Example 12.3 ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Figure 12.4 Sampling distribution Example 12.3

Excel Chi Squared Estimate: Variance ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Excel Chi Squared Estimate: Variance

©2003 Brooks/Cole, a division of Thomson Learning, Inc ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Figure 12.5

Excel z-Test: Proportion ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Excel z-Test: Proportion

Minitab Test and Cl for one proportion: Votes ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Minitab Test and Cl for one proportion: Votes

Excel z-Estimate: Proportion (Nielsen Ratings: Solution) ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Excel z-Estimate: Proportion (Nielsen Ratings: Solution)

©2003 Brooks/Cole, a division of Thomson Learning, Inc ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Minitab Test for Cl for One Proportion: Shows (Nielsen Ratings: Solution)

Figure 12.6 Plot of p versus p (1 – p) ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Figure 12.6 Plot of p versus p (1 – p) 

Excel z-Estimate: Proportion ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Excel z-Estimate: Proportion

Minitab Test and Cl for one Proportion: Group ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Minitab Test and Cl for one Proportion: Group