Mathematics, 17.07.2019 11:00 samarahbrown6050

Asimple random sample of 60 items from a population with σ = 9 resulted in a sample mean of 31. if required, round your answers to two decimal places. a. provide a 90% confidence interval for the population mean. b. provide a 95% confidence interval for the population mean. c. provide a 99% confidence interval for the population mean.

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Asimple random sample of 60 items from a population with σ = 9 resulted in a sample mean of 31. if r...

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