Chapter 14 – Statistical Inference: Review of Chapters 12 and 13 Statistics for Management and Economics-Sixth Edition Gerald Keller – Brian Warrack Chapter 14 – Statistical Inference: Review of Chapters 12 and 13

Figure 14.1 Flowchart of techniques: ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Figure 14.1 Flowchart of techniques: Chapters 12 and 13

Excel z-Test of the Difference Between Two Proportions (Case 1) ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Excel z-Test of the Difference Between Two Proportions (Case 1)

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

Excel F-Test Two-Sample for Variances ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Excel F-Test Two-Sample for Variances

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

Minitab Test for Equal Variances ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Minitab Test for Equal Variances

Minitab Two-Sample T-Test and Cl: Cost 1991, Cost 1992 ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Minitab Two-Sample T-Test and Cl: Cost 1991, Cost 1992

Excel t-Estimate of the Difference Between Two Means (Equal-Variances) ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Excel t-Estimate of the Difference Between Two Means (Equal-Variances)

Minitab Two-Sample Test T-Test and Cl: Cost 1991, Cost 1992 ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Minitab Two-Sample Test T-Test and Cl: Cost 1991, Cost 1992

Figure 14.2 Histogram of Repair Costs of 1991 Cars ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Figure 14.2 Histogram of Repair Costs of 1991 Cars

Figure 14.3 Histogram of Repair Costs of 1992 Cars ©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license. Figure 14.3 Histogram of Repair Costs of 1992 Cars