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You have developed a series of questions to measure job satisfaction of bus drivers in New York City. A random sample of 130 drivers has

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You have developed a series of questions to measure job satisfaction of bus drivers in New York City. A random sample of 130 drivers has an average score of 10.6, with a standard deviation of 2.8. What is your estimate of the average job satisfaction score for the population of all NYC bus drivers? Use the 95% condence level

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