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A 90% Confidence Interval Estimate for a Population Mean

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A 90% confidence interval estimate for a population mean A 90% confidence interval estimate for a population mean is determined to be 72.8 to 79.6.If the confidence level is reduced to 80%,the confidence interval for becomes narrower. is determined to be 72.8 to 79.6.If the confidence level is reduced to 80%,the confidence interval for A 90% confidence interval estimate for a population mean is determined to be 72.8 to 79.6.If the confidence level is reduced to 80%,the confidence interval for becomes narrower. becomes narrower.

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