1. Chapter 13 – Inference about Comparing Two Populations
Statistics for Management and Economics-Sixth Edition Gerald Keller – Brian Warrack
Chapter 13 – Inference about Comparing Two Populations

2. Figure 13.1 Independent samples from two populations
©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license.
Figure Independent samples from two populations

3. Excel t-Test: Two-Sample Assuming Unequal 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 Unequal Variances

4. Minitab Two-Sample T-Test and Cl: Consumers, Nonconsumers
©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: Consumers, Nonconsumers

5. 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

6. Figure 13.2 – Checking the Required Condition
©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license.
Figure 13.2 – Checking the Required Condition

7. Figure 13.3 – Checking the Required Condition
©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license.
Figure 13.3 – Checking the Required Condition

8. Figure 13.4 – Checking the Required Condition
©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license.
Figure 13.4 – Checking the Required Condition

9. Figure 13.5 – Checking the Required Condition
©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license.
Figure 13.5 – Checking the Required Condition

10. Figure 13.6 – Checking the Required Condition
©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license.
Figure 13.6 – Checking the Required Condition

11. 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

12. Excel F-Estimate of the Ratio of Two Variances
©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license.
Excel F-Estimate of the Ratio of Two Variances

13. Figure 13.7 Sampling from two populations of nominal data
©2003 Brooks/Cole, a division of Thomson Learning, Inc. Thomson Learning™ is a trademark used herein under license.
Figure Sampling from two populations of nominal data

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

15. Minitab Test and Cl for Two Proportions: Supermarket 1, Supermarket 2
©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: Supermarket 1, Supermarket 2

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

17. Minitab Test and Cl for Two Proportions: Supermarket 1, Supermarket 2
©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: Supermarket 1, Supermarket 2

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

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

20. 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