A researcher collected sample data for women ages to . The sample had a mean serum cholesterol level (measured in mg/100 mL) of , with a standard deviation of . Assuming that serum cholesterol levels for women ages to are normally distributed, find a confidence interval for the mean serum cholesterol level of all women in this age group. Then complete the table below.
Carry your intermediate computations to at least three decimal places. Round your answers to one decimal place.
A) What is the lower limit of the confidence interval?= 191.0
B) What is the upper limit of the confidence interval?= 194.8
Table value t at 20-1 = 19 DF =1.7291 =(190.9668, 194.8332) Confidence...
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