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Social Studies, 06.04.2020 22:07 oasmith2005

An SRS of 100 postal employees found that the average time these employees had worked for the postal service was J = 7 years with standard deviation s = 2 years. Assume the distribution of the time the population of employees have worked for the postal service is approximately Normal. A 95% confidence interval for the mean time  the population of postal service employees have spent with the postal service is:

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