Answer Happy

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 mgid) have a mean of 2.9 and a standard deviation of 19.7. Construct a 95% confidence interval estimate of the mean net change in LDL cholesterol after the partic treatment. What does the confidence interval suggest about the effectiveness of garlic in reducing LDL cholesterol? Click here to view butonable. 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? mgr <<mar (Round to two decimal places as needed.) What does the confidence interval suggest about the effectiveness of the treatment? OA. The confidence interval limits do not contain 0, suggesting that the garlic treatment did affect the LDL cholesterol levels. OB. The confidence interval limits do not contain 0., suggesting that the garlic treatment did not affect the LDL cholesterol levels OC. The confidence interval limits contain 0, suggesting that the garlic treatment did not affect the LDL cholesterol levels OD. The confidence interval limits contain 0, suggesting that the garlic treatment did affect the LDL cholesterol levels
Use the sample date and confidence level given below to complete parts (a) through (d). In a study of cell phone use and brain hemispheric dominance, an internet survey was e-mailed to 2675 subjects randomly selected from an online grup involved with ears. 1012 surveys were retumed. Construct a 99% confidence interval for the proportion of retumed surveys. Click the icon to view a table of cons a) Find the best point estimate of the population proportion p. B (Round to three decimal places as needed.) b) identify the value of the margin of emor E E- (Round to three decimal places as needed.) c) Construct the confidence interval (Round to three decimal places as needed) dj Write a statement that correctly interprets the confidence interval. Choose the correct answer below. OA 90% of sample proportions will fall between the lower bound and the upper bound. OB. One has 99% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion
(Round to three decimal places as needed) d) Write a statement that correctly interprets the confidence interval. Choose the correct answer below. OA 99% of sample proportions will fall between the lower bound and the upper bound. OB. One has 99% confidence that the interval from the lower bound to the upper bound actually does contain the true value of the population proportion. OC. One has 99% confidence that the sample proportion is equal to the population proportion. OD. There is a 99% chance that the true value of the population proportion will fall between the lower bound and the upper bound