**Title: Evaluating the Effectiveness of Garlic in Lowering LDL Cholesterol****Study Overview:**In a research study examining the effectiveness of garlic tablets in reducing cholesterol levels, 43 subjects participated in a trial. Each subject received garlic in a processed tablet form, and cholesterol levels were recorded both before and after the treatment.**Key Data:**- **Subjects:** 43- **Measurement:** LDL cholesterol change (mg/dL)- **Mean change:** 4.2 mg/dL- **Standard deviation:** 19.4 mg/dL**Objective:**To construct a 99% confidence interval estimate of the mean net change in LDL cholesterol after administering garlic treatment. Furthermore, the study seeks to understand what this confidence interval implies about garlic's efficacy in lowering LDL cholesterol.**Statistical Analysis:**The confidence interval provides a range of values within which the true mean difference in LDL cholesterol is likely to fall, 99% of the time, considering the sample data. If this interval does not include zero and is largely negative, it suggests garlic effectively reduces LDL cholesterol. Conversely, an interval including zero implies the effectiveness might not be statistically significant.

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Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018

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