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Use the given degree of confidence and sample data to construct a confidence interval for...

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Use the given degree of confidence and sample data to construct a confidence interval for the population mean Assume that the population has a normal distribution A sociologist develops a test to measure attitudes about public transportation and 27 randomly selected subjects are given the test Their mean score is 76 2 and their standard deviation is 21 4 Construct the 95 confidence interval for the mean score of all such subjects O 64 2 88 2 O 67 7 84 7 O 74 677 8

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