you have developed a series of questions to measure job satisfaction of bus driver in New YOrk. a random sample of 100 drivers has an average score of

you have developed a series of questions to measure job satisfaction of bus driver in New YOrk. a random sample of 100 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% confidence level

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