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