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You are a researcher for a professional research firm. Your firm has won a contract to do a study for an air travel industry publication. The editors of the publication would like to know their readers' thoughts on air travel in subjects

such as ticket purchase, services, safety, comfort, economic growth, and security. They would also like to know the thoughts of adults who use air travel for business as well as for recreation.The editors have given you their readership database and 20 questions they would like to ask. Two of the sample questions are as follows:

You know that it is too expensive to contact all of the readers, so you need to determine a way to contact a representative sample of the entire readership population.

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Statistics and Probability, Statistics

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