SOLUTION: 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 afte
Algebra.Com
Question 854092: 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 mf/dl) have a mean of 5.6 and standard deviation of 19.5
a. What is the best point estim ate of the population mean net change in LDL cholesterol after the garlic treatment?
b. Construct a 90% confidence interval 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.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
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 mf/dl) have a mean of 5.6 and standard deviation of 19.5
a. What is the best point estim ate of the population mean net change in LDL cholesterol after the garlic treatment?
Ans: 5.6 mf/dl
--------------------------------
b. Construct a 90% confidence interval of the mean net change in LDL cholesterol after the garlic treatment.
ME = 1.645*19.5/sqrt(45) = 4.78
------
90% CA:: 5.6-4.78 < u < 5.6+4.78
90%CA:: 0.82 < u < 10.38
-------------------
What does the confidence interval suggest about the effectiveness of garlic in reducing LDL cholesterol.
The mean is slightly higher than 5.6.
========================================
Cheers,
Stan H.
========================================
RELATED QUESTIONS
In a test of the effectiveness of garlic for lowering cholesterol, 45 subjects... (answered by Boreal)
In a test of the effectiveness of garlic for lowering cholesterol, 49 subjects were... (answered by Boreal)
In a test of effectiveness of garlic for lowering cholesterol, 48 subjects were treated... (answered by stanbon)
In a test of the effectiveness of garlic for lowering cholesterol, 43 subjects were... (answered by Boreal)
In a test of the effectiveness of garlic for lowering​ cholesterol, 49 subjects were... (answered by Boreal)
In a test of the effectiveness of garlic for lowering​ cholesterol, 43 subjects were... (answered by CPhill)
In a test of the effectiveness of garlic for lowering cholesterol, 47
subjects were... (answered by rothauserc)
Can someone please help?
In a test of the effectiveness of garlic for lowering... (answered by stanbon)
in a test of effectiveness of garlic for lowering cholesterol, 50 subjects were treated... (answered by stanbon)