In a test of the effectiveness of garlic for lowering cholesterol, 44 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes (before−after) in their levels of LDL cholesterol (in mg/dL) have a mean of 3.4 and a standard deviation of 18.8. 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? What is the confidence interval estimate of the population mean μ? (?) mg/dL<μ<(?) mg/dL (Round to two decimal places as needed.) What does the confidence interval suggest about the effectiveness of the treatment? A. The confidence interval limits contain 0, suggesting that the garlic treatment did not affect the LDL cholesterol levels. B. The confidence interval limits do not contain 0, suggesting that the garlic treatment did affect the LDL cholesterol levels. C. The confidence interval limits contain 0, suggesting that the garlic treatment did affect the LDL cholesterol levels. D. The confidence interval limits do not contain 0, suggesting that the garlic treatment did not affect the LDL cholesterol levels.
In a test of the effectiveness of garlic for lowering cholesterol, 44 subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes (before−after) in their levels of LDL cholesterol (in mg/dL) have a mean of 3.4 and a standard deviation of 18.8. 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? What is the confidence interval estimate of the population mean μ? (?) mg/dL<μ<(?) mg/dL (Round to two decimal places as needed.) What does the confidence interval suggest about the effectiveness of the treatment? A. The confidence interval limits contain 0, suggesting that the garlic treatment did not affect the LDL cholesterol levels. B. The confidence interval limits do not contain 0, suggesting that the garlic treatment did affect the LDL cholesterol levels. C. The confidence interval limits contain 0, suggesting that the garlic treatment did affect the LDL cholesterol levels. D. The confidence interval limits do not contain 0, suggesting that the garlic treatment did not affect the LDL cholesterol levels.
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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Question
10
In a test of the effectiveness of garlic for lowering cholesterol,
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?
44
subjects were treated with garlic in a processed tablet form. Cholesterol levels were measured before and after the treatment. The changes
(before−after)
in their levels of LDL cholesterol (in mg/dL) have a mean of
3.4
and a standard deviation of
18.8.
Construct a
95%
confidence What is the confidence interval estimate of the population mean
μ?
(?)
mg/dL<μ<(?)
mg/dL(Round to two decimal places as needed.)
What does the confidence interval suggest about the effectiveness of the treatment?
The confidence interval limits
contain
0, suggesting that the garlic treatment
did not
affect the LDL cholesterol levels.The confidence interval limits
do not contain
0, suggesting that the garlic treatment
did
affect the LDL cholesterol levels.The confidence interval limits
contain
0, suggesting that the garlic treatment
did
affect the LDL cholesterol levels.The confidence interval limits
do not contain
0, suggesting that the garlic treatment
did not
affect the LDL cholesterol levels.Expert Solution
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