Learning Objectives

  • Describe the process of estimation and identify two types of estimation.
  • Distinguish between significance testing and estimation.
  • Compute confidence intervals for the one–sample z test.
  • Compute confidence intervals for the one–sample t test.
  • Compute confidence intervals for the two–independent sample t test.
  • Compute confidence intervals for the related samples t test.
  • Distinguish between the certainty and precision of an interval estimate.
  • Summarize confidence intervals for the z test and t tests in APA format.
  • Compute confidence intervals for the one–sample, the two–independent sample, and the related samples t tests using SPSS.