Read pages 222-251 in your textbook.

After reading and studying this chapter, you should be able to do the following: 

8.1 Describe the purpose of a one-sample t test, and how it is conducted

8.2 Explain how a t test differs from a Z test

8.3 Define confidence interval, and describe how the confidence level is calculated

8.4 Name the three pieces of information needed to identify the critical t values that set the 8.5 boundaries of rejection zones in t tests