28.1 Introduction

In Chap. 27, hypothesis tests for one mean were studied. In later chapters, hypothesis tests are discussed in other contexts, too.

The general approach to hypothesis testing is the same for any hypothesis test, and so some general ideas are discussed in this chapter. All hypothesis tests answer questions about unknown population quantities (such as the population mean $$\mu$$), based on sample statistics (such as the sample mean $$\bar{x}$$).

• Weighing the evidence for consistency: $$P$$-values (Sect. 28.6).