A common claim is that garlic lowers cholesterol levels. In a test of the effectiveness of garlic, 45 subjects were treated with doses of raw garlic, and their cholesterol levels were measured before and after the treatment. The changes in their levels of LDL cholesterol (in mg/mL) have a mean of 4.94 mg/mL and a standard deviation of 18.51 mg/mL. Construct a 95% confidence interval for the average net change in LDL cholesterol after the garlic treatment. i. Procedure: Select an answer Select an answer One proportion Z procedure One mean T procedure One mean Z procedure One variance x² procedure ii. Assumptions: (select everything that applies) Simple random sample Sample size is greater than 30 Population standard deviation is unknown Population standard deviation is known The number of positive and negative responses ar Normal population iii. Unknown parameter: Select an answer Select an answer u, population mean o², population variance p. population proportion

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A common claim is that garlic lowers cholesterol levels. In a test of the effectiveness of garlic, 45 subjects
were treated with doses of raw garlic, and their cholesterol levels were measured before and after the
treatment. The changes in their levels of LDL cholesterol (in mg/mL) have a mean of 4.94 mg/mL and a
standard deviation of 18.51 mg/mL. Construct a 95% confidence interval for the average net change in LDL
cholesterol after the garlic treatment.
i. Procedure: Select an answer
Select an answer
One proportion Z procedure
One mean T procedure
One mean Z procedure
One variance x² procedure
ii. Assumptions: (select everything that applies)
Simple random sample
Sample size is greater than 30
Population standard deviation is unknown
Population standard deviation is known
The number of positive and negative responses ar
Normal population
iii. Unknown parameter:
Select an answer
Select an answer
u, population mean
o², population variance
p, population proportion
Transcribed Image Text:Question 5 A common claim is that garlic lowers cholesterol levels. In a test of the effectiveness of garlic, 45 subjects were treated with doses of raw garlic, and their cholesterol levels were measured before and after the treatment. The changes in their levels of LDL cholesterol (in mg/mL) have a mean of 4.94 mg/mL and a standard deviation of 18.51 mg/mL. Construct a 95% confidence interval for the average net change in LDL cholesterol after the garlic treatment. i. Procedure: Select an answer Select an answer One proportion Z procedure One mean T procedure One mean Z procedure One variance x² procedure ii. Assumptions: (select everything that applies) Simple random sample Sample size is greater than 30 Population standard deviation is unknown Population standard deviation is known The number of positive and negative responses ar Normal population iii. Unknown parameter: Select an answer Select an answer u, population mean o², population variance p, population proportion
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