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how to use the confidence interval formula (refer to picture), and the correct formula for means,to calculate the 95% confidence interval for any population mean

how to use the confidence interval formula (refer to picture), and the correct formula for means,to calculate the 95% confidence interval for any population mean you choose . Tell what quantitative variable you chose. then invent sample size of 30 or more, the sample mean and the sample standard deviation. calculate confidence interval.

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