Web-based exercise. All of the sample surveys mentioned in Examples 4 to 7 maintain Web sites:

• Gallup Poll (Example 4): www.gallup.com/

• Current Population Survey (Example 5): www.bls.gov/cps/

• Nielsen Media Research (Example 6):www.nielsenmedia.com/nc/portal/

site/Public/

• General Social Survey (Example 7): www.norc.org/projects/General+

Social+Survey.htm We recommend the Gallup site for its current poll results and clear explanations of sample survey methods.

Visit the Gallup Poll Web site. Select one of the stories available to nonsubscribers. Identify the population and sample as exactly as possible.

How many people were in the sample?

AppendixLO1