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akhawajaaa
04.11.2021 • 
Mathematics

A common claim is that garlic lowers cholesterol levels. In a test of the effectiveness of garlic, 49 subjects were treated with doses of raw garlic, and their cholesterol levels were measured before and after the treatment. The changes in their levels of LDL cholesterol (in mg/dL) have a mean of 0.4 and a standard deviation of 21.0. Required:
Construct a 95% confidence interval estimate of the mean net change in LDL cholesterol after the garlic treatment.

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