Question

7.2.14 Question Help In a test of the effectiveness of garlic for lowering cholesterol, 47 subjects were treated with garlic in a processed tabletform. Cholesterol levels were measured before! and after the treatment. The changes (before-after) in their levels of LDL cholesterol (in mg/dL.) have a mean of 3.7 and a standard deviation of 157. Construct a 95% confidence interval estimate of the mean net change in LDL cholesterol after the garlic treatment. What does the confidence interval suggest about the effectiveness of garlic in reducing LDL cholesterol? Click here to view at distribution table Click here to view page 1 of the standard normal distribution table Click here to view page 2 of the standard normal distribution table What is the confidence interval estimate of the population mean? mg/dL << mg/dl. (Round to two decimal places as needed)

Answer 1

fata=20128 a is not known Given naut f=317 8-15.7 251. C. I, 220.05 ofa nota ho t-distribution is used because c.I ay řI kan slim : 3.71 (2-0128) (S) 3.7+ Gool lower bound: Brit-4061 = -0.91 upper bound = 3.7+4.6la 8.31 5.7 -0.91 la 8.31.