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How many riders must you survey

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You have just been hired by General Motors to tour the United States giving randomly selected drivers test rides in a new Corvette (yeah, right!). After giving the test drive, you must ask the rider whether he or she would consider buying a Corvette. How many riders must you survey (take for test rides) to be 90% confident that the sample proportion is off by no more than five percentage points?

Reference no: EM13911896

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