Chapter 8. Hypothesis Testing: Z and t Tests
In Chapter 7, you learned the fundamentals of hypothesis testing. This chapter discusses hypothesis tests that involve two groups, more formally known as two-sample tests. You will learn to use:
• The hypothesis test that examines the differences between the proportions of two groups
• The hypothesis test that examines the differences between the means of two groups
You will also learn how to evaluate the statistical assumptions about your variables that need to be true in order to use these tests ...