I In a test of the effectiveness of garlic for lowering cholesterol, 48 subjects were treated with garlic in a processe
Posted: Sun Jul 10, 2022 10:16 am
I
In a test of the effectiveness of garlic forlowering cholesterol,
48
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 meanof
5.4
and a standard deviation of
16.2.
Construct a
99%
confidence interval estimate of the mean net change in LDLcholesterol after the garlic treatment. What does the confidenceinterval suggest about the effectiveness of garlic in reducingLDL cholesterol?Click here to view a t distributiontable.
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Click here to view page 1 of the standard normal distributiontable.
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Click here to view page 2 of the standard normal distributiontable.
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Question content area bottom
Part 1
What is the confidence interval estimate of the populationmean
μ?
enter your response here
mg/dL<μ<enter your response here
mg/dL
(Round to two decimal places as needed.)
Part 2
What does the confidence interval suggest about theeffectiveness 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 not
affect the LDL cholesterol levels.
C.The confidence interval limits
do not contain
0, suggesting that the garlic treatment
did
affect the LDL cholesterol levels.
D.The confidence interval limits
contain
0, suggesting that the garlic treatment
did
affect the LDL cholesterol levels.
In a test of the effectiveness of garlic forlowering cholesterol,
48
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 meanof
5.4
and a standard deviation of
16.2.
Construct a
99%
confidence interval estimate of the mean net change in LDLcholesterol after the garlic treatment. What does the confidenceinterval suggest about the effectiveness of garlic in reducingLDL cholesterol?Click here to view a t distributiontable.
LOADING...
Click here to view page 1 of the standard normal distributiontable.
LOADING...
Click here to view page 2 of the standard normal distributiontable.
LOADING...
Question content area bottom
Part 1
What is the confidence interval estimate of the populationmean
μ?
enter your response here
mg/dL<μ<enter your response here
mg/dL
(Round to two decimal places as needed.)
Part 2
What does the confidence interval suggest about theeffectiveness 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 not
affect the LDL cholesterol levels.
C.The confidence interval limits
do not contain
0, suggesting that the garlic treatment
did
affect the LDL cholesterol levels.
D.The confidence interval limits
contain
0, suggesting that the garlic treatment
did
affect the LDL cholesterol levels.