Read pages 169-191 in your textbook.

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

6.1 Define sampling error, and explain why it is a frequent, natural occurrence in empirical research

6.2 Identify the principal characteristics of the central limit theorem

6.3 Explain the law of large numbers in calculating probability

6.4 Describe how a Z test is conducted, and interpret the results of a Z test