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A researcher collected sample data for 2 0 middle - aged women. The sample had a mean serum cholesterol level ( measured in milligrams per
A researcher collected sample data for middleaged women. The sample had a mean serum cholesterol level measured in milligrams per one hundred milliliters of with a standard deviation of Assuming that serum cholesterol levels for middleaged women are normally distributed, find a confidence interval for the mean serum cholesterol level of all women in this age group. Give the lower limit and upper limit of the confidence interval.
Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place. If necessary, consult a list of formulas.
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