11/2/2009

Final comments on Type I and Type II errors

Statistical Inference for two means (Exercise 11.25 on p. 494)

• Two-sample Z procedures (Not often applied)
• Two-sample t procedures
  • Minitab  - Stat > Basic Statistics > 2-Sample t
• The pooled two-sample t procedures
  • Minitab - Stat > Basic Statistics > 2-Sample t (Click Assume Equal Variances)
• The Mann-Whitney Test
  • Minitab - Stat > Nonparametrics > Mann-Whitney

Class Exercises

• Work on 11.3 together as a class
• 11.9, 11.13, 11.15, 11.21

Please bring your questions on the material from Chapters 6-10, Appendix A, and Section 11.1 to class on Wednesday. We will have a problem session on Wednesday. Solutions to class exercises and old hw problems will be presented.