After reading this chapter, you should be able to:

1. Describe the process of estimation and identify two types of estimation.
2. Distinguish between significance testing and estimation.
3. Compute and interpret confidence intervals for the one-sample z test.
4. Compute and interpret confidence intervals for the one-sample t test.
5. Compute and interpret confidence intervals for the two-independent-sample t test.
6. Compute and interpret confidence intervals for the related-samples t test.
7. Distinguish between the certainty and precision of an interval estimate.
8. Summarize confidence intervals for the z test and t tests in APA format.
9. Compute confidence intervals for the one-sample, two-independent-sample, and related-samples t tests using SPSS.