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Confidence interval estimate of the population mean

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Reference no: EM132422090

In a test of the effectiveness of garlic for lowering? cholesterol, 49 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes ?(beforeminus ?after) in their levels of LDL cholesterol? (in mg/dL) have a mean of 3.8 and a standard deviation of 15.4. Construct a 95?% 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?

Question 1: What is the confidence interval estimate of the population mean mu μ?? ?mg/dL <mu < ?mg/dL

Question 2: Express 95 95?% as the equivalent probability and then use the fact that this probability is equal to 1minus -alpha α.

Question 3: Find the t-values ?

Question 4: Find the p-values?

Question 5: Find the E?

Question 6: Find the lower and upper confidence limit?

Question 7: Find the 95?% confidence interval estimate of the mean net change in LDL cholesterol after the garlic treatment

Reference no: EM132422090

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