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Social Studies, 22.01.2021 19:50 sarah19Nursing

A study is to be conducted on the mean salary of mayors of cities with a population of fewer than 100000. The error in estimating the mean is to be less than 100 birr and confidence level of 95% is desired. Suppose that is the standard deviation of the population is estimated to be 1000birr. What is the required sample size?

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