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It is known that the serum cholesterol level of females is normally distributed and its population variance is 41 mg/mL. Researchers decided to estimate the
It is known that the serum cholesterol level of females is normally distributed and its population variance is 41 mg/mL. Researchers decided to estimate the population mean serum cholesterol level. They observed a sample average serum cholesterol level of 222 mg/ml in 43 females.
what value would give you the 95% confidence interval for the population mean serum cholesterol level of females?
NB: Answer should be in numerical value only.
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