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Estimate the population mean by finding a 95 confidence interval given a sample of size...

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Estimate the population mean by finding a 95 confidence interval given a sample of size 279 with a mean of 31 9 and a standard deviation of 17 8 Preliminary a Is n 30 Yes No b Confidence Interval What is the 95 confidence interval to estimate the population mean Enter the tri linear inequality values accurate to one decimal place

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