A random sample of 50 perceived age estimates for a model in a cigarette advertisement showed that
Question:
a. Use this sample to calculate a 95 percent confidence interval for the population mean age estimate for all viewers of the ad.
b. Remembering that the cigarette industry requires that models must appear at least 25 years old, does the confidence interval make us 95 percent confident that the population mean perceived age estimate is at least 25? Is the mean perceived age estimate much more than 25? Explain.
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a x age of cigarette ad models x 2622 years s 37432 years n ...View the full answer
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Related Book For 
Essentials Of Business Statistics
ISBN: 9780078020537
5th Edition
Authors: Bruce Bowerman, Richard Connell, Emily Murphree, Burdeane Or
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