In a test of the effectiveness of garlic for lowering cholesterol,47 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes in their levels of LDL cholesterol (in mg/dL) have a mean of 3.7 and a standard deviation of 18.4. (a) What is the best point estimate of the population mean net change in LDL cholesterol after the garlic treatment? The best point estimate is __ mg/dL. (b) Construct a 99% confidence interval estimate of the mean net change in LDL cholesterol after the garlic treatment.

Question

anonymous · Answer

What is the confidence interval estimate of the population mean "u"?