Given:
= 3.4, Sd = 18.6, n = 50
d = changes (before - After)
Degrees of freedom = n-1 = 50-1 = 49
Critical value:
…………………...Using
t table
Construct 90% Confidence interval:
-1.01 < mg/dL <
< 7.81 mg/dL
ANSWER: C
C. The Confidnece interval limits 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, 50 subjects were treated with...
In a test of the effectiveness of garlic for lowering cholesterol, 50 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 3.1 and a standard deviation of 18.6. 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...
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Question Help In a test of the effectiveness of garlic for lowering Cholesterol 49 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 45 and a standard deviation of 157 Construct a 99% confidence interval estimate of the mean nel change in LDL cholesterol after the garlic treatment. What does the confidence interval suggest about...
In a test of the effectiveness of garlic for lowering cholesterol, 47 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 3.6 and a standard deviation of 17.9. Construct a 90% confidence interval estimate of the mean not change in LDL cholesterol after the garlic treatment. What does the confidence interval suggest about the effectiveness...
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In a test of the effectiveness of garlic for lowering cholesterol, 42 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 3.1 and a standard deviation of 18.6. 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...
In a best of the effectiveness of garlic for lowering cholesterol 43 wucts were treated with garlic in a processed abietom. Cholesterol levels were measured before and the rest. The changes before her in the levels of LOL cholesterol in my have a mean of 3.6 and a standard deviation of 152 Construct a 10% confidence Wierval estate of the mean not change in LDL cholesterol to the garlic treatment. What does the confidence interval suggest about the effectiveness of...
In a test of the effectiveness of garlic for lowering cholesterol, 47 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 5.1 and a standard deviation of 18.1. 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...