In a test of the effectiveness of garlic for lowering cholesterol, 43 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes (beforeafter) in their levels of LDL cholesterol (in mg/dL) have a mean of 4.9 and a standard deviation of .15.6 Construct a 99% 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?
Added by Richard T.
Step 1
- Sample size (\( n \)) = 43 - Mean change in LDL cholesterol (\( \bar{x} \)) = 4.9 mg/dL - Standard deviation (\( s \)) = 15.6 mg/dL - Confidence level = 99% Show more…
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