In a test of the quality of two television commercials, each commercial was shown in a separate test area six times over a one-week period. The following week a telephone survey was conducted to identify individuals who had seen the commercials. Those individuals were asked to state the primary message in the commercials. The following results were recorded.
|Commercial A||Commercial B|
|Number Who Saw Commercial||150||200|
|Number Who Recalled Message||63||60|
- a. Use α = .05 and test the hypothesis that there is no difference in the recall proportions for the two commercials.
- b. Compute a 95% confidence interval for the difference between the recall proportions for the two populations.
Chapter 10 Solutions
Statistics for Business & Economics, Revised (MindTap Course List)
Additional Math Textbook Solutions
Elementary Statistics: Picturing the World (6th Edition)
An Introduction to Mathematical Statistics and Its Applications (6th Edition)
Introductory Statistics (2nd Edition)