This supporting web site provides additional resources for both instructors and students. Instructors are provided an Answer Manual that contains answers to all of the problems within the text chapters. This Answer Manual is also available in another version that contains both the text questions and the answers. Also for instructors, two additional chapters are available on the web site: Chapter 7: Tests of Hypothesis Involving Two Samples ; and Chapter 9: Two-Factor Analysis.

For students, additional problems and interactive answers are available for further chapter study and practice.