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A simple random sample of 80 items from a population with o = 9 resulted in a sample mean of 34. If required, round your

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A simple random sample of 80 items from a population with o = 9 resulted in a sample mean of 34. If required, round your answers to two decimal places. a. Provide a 90% confidence interval for the population mean. to b. Provide a 95% confidence interval for the population mean. to c. Provide a 99% confidence interval for the population mean. to

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