n 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 ​(before−​after) in their levels of LDL cholesterol​ (in mg/dL) have a mean of 3.7 and a standard deviation of15.3. 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?   What is the confidence interval estimate of the population mean μ​?

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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
​(before−​after) in their levels of LDL cholesterol​ (in mg/dL) have a mean of 3.7 and a standard deviation of15.3. 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?
 
What is the confidence interval estimate of the population mean
μ​?
 
 
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