According to the article Which Adults Do Underage Youth Ask for Cigarettes? (American Journal of Public Health
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According to the article “Which Adults Do Underage Youth Ask for Cigarettes?” (American Journal of Public Health [1999]: 1561–1564), 43.6% of the 149 18- to 19-year-olds in a random sample have been asked to buy cigarettes for an underage smoker.
a. Is there convincing evidence that fewer than half of 18- to 19-year-olds have been approached to buy cigarettes by an underage smoker?
b. The article went on to state that of the 110 nonsmoking 18- to 19-year-olds, only 38.2% had been approached to buy cigarettes for an underage smoker. Is there evidence that less than half of nonsmoking 18- to 19-year-olds have been approached to buy cigarettes?
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To answer these questions we need to perform hypothesis testing We will use a significance level of 005 5 for both cases a Is there convincing evidenc...View the full answer
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Related Book For 
Introduction To Statistics And Data Analysis
ISBN: 9780495118732
3rd Edition
Authors: Roxy Peck, Chris Olsen, Jay L. Devore
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