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18. Assume that a sample...

18. Assume that a sample is used to estimate a population mean mu. Use the given confidence level and sample data to find the margin of error. Assume that the sample is a simple random sample and the population has a normal distribution. Round your answer to one more decimal place than the sample standard deviation.

95% confidence; n = 91; x-bar = 16, s = 9.1 (Points : 5)

95% confidence; n = 91; x-bar = 16, s = 9.1 (Points : 5)

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