In a test of the effectiveness of garlic for lowering​ cholesterol, 43 subjects were treated with...

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In a test of the effectiveness of garlic for lowering​cholesterol, 43 subjects were treated with garlic in a processedtablet form. Cholesterol levels were measured before and after thetreatment. The changes ​(before−​after) in their levels of LDLcholesterol​ (in mg/dL) have a mean of 5.7and a standard deviationof 17.7Construct a 90% confidence interval estimate of the mean netchange in LDL cholesterol after the garlic treatment. What does theconfidence interval suggest about the effectiveness of garlic inreducing LDL​ cholesterol?

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