In a test of the effectiveness of garlic for lowering cholesterol, 45 subjects w

Question

In a test of the effectiveness of garlic for lowering cholesterol, 45 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes in their levels of LDL cholesterol (in mg/dL) have a mean of 3.2 and a standard deviation of 18.1. Complete parts (a) and (b) belovw Click here to view a t distribution table lick here to view page 1 of the standard normal distrib Click here to view page 2 of the standard normal distribution table a. What is the best point estimate of the population mean net change in LDL cholesterol after the garlic treatment? The best point estimate is 3.2 mg/dL. (Type an integer or a decimal.) b. Construct a 90% 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 cholesteroi? What is the confidence interval estimate of the population mean ? table Round to two decimal places as needed.)

Explanation / Answer

Standard error of the mean = SEM = S/N = 2.698

t(, N-1) = 1.68

Confidence interval = m +/- (t(, N-1)*SEM)

Mean = 3.2

Lower bound: -1.33

Upper bound: 7.73

Related Questions

Navigate

• Browse (All)
• Browse I
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.