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In Exercises 12.85–12.94, use Procedure 12.2 on page 557 to perform an appropriate hypothesis test. Be sure to check the conditions for using that procedure.
12.85 Government Surveillance. Gallup conducted a national survey of 1008 American adults, asking “As you may know, as part of its efforts to investigate terrorism, a federal government agency obtained records from larger U.S. telephone and Internet companies in order to compile telephone call logs and Internet communications. Based on what you have heard or read about the program, would you say that you approve or disapprove of this government program?” Of those surveyed, 534 said they disapprove.
- a. Determine and interpret the sample proportion.
- b. At the 5% significance level, do the data provide sufficient evidence to conclude that a majority (more than 50%) of American adults disapprove of this government surveillance program?
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Chapter 12 Solutions
Introductory Statistics, Books a la Carte Plus NEW MyLab Statistics with Pearson eText -- Access Card Package (10th Edition)
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