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A sample of 9 patients admitted to a hospital for treatment of hepatitis yielded the serum...

A sample of 9 patients admitted to a hospital for treatment of hepatitis yielded the serum bilirubin levels as follows: 20.5 ,14.8, 21.3, 12.7, 15.2, 26.6, 23.4 ,22.9, 15.7 Construct a 95 percent confidence interval for the population mean. (assume normal population)

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