A survey conducted by American Express and the French Tourist Office found that most visitors to France
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A survey conducted by American Express and the French Tourist Office found that most visitors to France do not think that the French are unfriendly [30]. The sample consisted of “1,000 Americans who have visited France more than once for pleasure over the past two years.”
a. Explain why there might be sampling bias in this study.
b. Suppose that 90 percent of all people who visit France think that the French are very unfriendly. Explain how it could still be the case that most of the people in this survey do not think the French are unfriendly.
c. Who should have been surveyed in order to obtain more useful results?
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Related Book For 
Essential Statistics Regression And Econometrics
ISBN: 9780123822215
1st Edition
Authors: Gary Smith
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