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 (before - after) in their levels of LDL cholesterol (in mg/dL) have a mean of 5.4 and a standard deviation of 18.7. Construct a 99% 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? Click here to view at distribution table. Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table. What is the confidence interval estimate of the population mean u? Omg/dL

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Transcribed Image Text:Crticaltas tu ata g 1a tuve e t ot paatea I Diatritukan Crial Va lus Le et 214 NEGATIVE z Scores POSITIVE z Scores zan Standard Namal 17 Dirtutan Ourark Ares tom te LEFT Standerd Namal i Di n Oun tomte LEFT 20 1 Critio tale heganvel 00 1000 -14 LIN an 00 e 1 00 13 Right ted w A T - am an A e M MT 000 175 21 N sm the 1 15 1 1 Creeal tvlue 2479 19 14 1 1 14 100 24 Tu a 1414 1300 130 14 245 2412 al a 1 Critical tale negral Crteel raue stivel Ca c a on mtlcomthderyerTetmpeerte ertenyen rye IMSTMetes 12
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 (before - after) in their levels of LDL cholesterol (in mg/dL) have a mean of 5.4 and a standard deviation of 18.7. Construct a 99% 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?
Click here to view a t distribution table
Click here to view page 1 of the standard normal distribution table.
Click here to view page 2 of the standard normal distribution table,
What is the confidence interval estimate of the population mean u?
Omg/dL <µ< mg/dL
(Round to two decimal places as needed.)
What does the confidence interval suggest about the effectiveness of the treatment?
O A. The confidence interval limits contain 0, suggesting that the garlic treatment did not affect the LDL cholesterol levels.
O B. The confidence interval limits do not contain 0, suggesting that the garlic treatment did affect the LDL cholesterol levels.
O C. The confidence interval limits contain 0, suggesting that the garlic treatment did affect the LDL cholesterol levels.
O D. The confidence interval limits do not contain 0, suggesting that the garlic treatment did not affect the LDL cholesterol levels.
Transcribed Image Text: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 (before - after) in their levels of LDL cholesterol (in mg/dL) have a mean of 5.4 and a standard deviation of 18.7. Construct a 99% 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? Click here to view a t distribution table Click here to view page 1 of the standard normal distribution table. Click here to view page 2 of the standard normal distribution table, What is the confidence interval estimate of the population mean u? Omg/dL <µ< mg/dL (Round to two decimal places as needed.) What does the confidence interval suggest about the effectiveness of the treatment? O A. The confidence interval limits contain 0, suggesting that the garlic treatment did not affect the LDL cholesterol levels. O B. The confidence interval limits do not contain 0, suggesting that the garlic treatment did affect the LDL cholesterol levels. O C. The confidence interval limits contain 0, suggesting that the garlic treatment did affect the LDL cholesterol levels. O D. The confidence interval limits do not contain 0, suggesting that the garlic treatment did not affect the LDL cholesterol levels.
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