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55. A sample of 314 patients between the ages of 38 and 82 were given a combination of the drugs ezetimibe and simvastatin. They achieved a mean reduction in total cholesterol of millimoles per liter. Assume the population standard deviation is 0.18 millimoles per lite n=314 - a. Find the point estimate for the mean reduction in total cholesterol for patients who take this combination of drugs. M b. Find the critical value that corresponds to a 97.5% level of confidence. c. Find the margin of error that corresponds to a 97.5% level of confidence. d. Construct a 97.5% confidence interval for the mean reduction in total cholesterol for patients who take this combination of drugs._ e. Based on the confidence interval is it likely that the mean reduction in cholesterol level is less than 0.90?

55. A sample of 314 patients between the ages of 38 and 82 were given a combination of the drugs ezetimibe and simvastatin. They achieved a mean reduction in total cholesterol of millimoles per liter. Assume the population standard deviation is 0.18 millimoles per lite n=314 - a. Find the point estimate for the mean reduction in total cholesterol for patients who take this combination of drugs. M b. Find the critical value that corresponds to a 97.5% level of confidence. c. Find the margin of error that corresponds to a 97.5% level of confidence. d. Construct a 97.5% confidence interval for the mean reduction in total cholesterol for patients who take this combination of drugs._ e. Based on the confidence interval is it likely that the mean reduction in cholesterol level is less than 0.90?

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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55. A sample of 314 patients between the ages of 38 and 82 were given a combination of the drugs ezetimibe and simvastatin. They achieved a mean reduction in total cholesterol of millimoles per liter. Assume the population standard deviation is 0.18 millimoles per liter D = X n=314 a. Find the point estimate for the mean reduction in total cholesterol for patients who take this combination of drugs. M b. Find the critical value that corresponds to a 97.5% level of confidence. c. Find the margin of error that corresponds to a 97.5% level of confidence. d. Construct a 97.5% confidence interval for the mean reduction in total cholesterol for patients who take this combination of drugs. e. Based on the confidence interval is it likely that the mean reduction in cholesterol level is less than 0.90? 56. The Institute for College Access and Success reported that 67% of college students in 2008 graduated with student loan debt. A random sample of 85 graduates is drawn. a) Find the mean of the sampling distribution.. Mô - P-0.17 b) Find the standard deviation of the sampling distribution. 10+ p = √p(1-b) = √√0.67 (1067) = 0,051 c) Find the probability that less than 60% of the people in the sample were in debt. (67, 0.051)20-10849584 sample were in debt.
Transcribed Image Text:55. A sample of 314 patients between the ages of 38 and 82 were given a combination of the drugs ezetimibe and simvastatin. They achieved a mean reduction in total cholesterol of millimoles per liter. Assume the population standard deviation is 0.18 millimoles per liter D = X n=314 a. Find the point estimate for the mean reduction in total cholesterol for patients who take this combination of drugs. M b. Find the critical value that corresponds to a 97.5% level of confidence. c. Find the margin of error that corresponds to a 97.5% level of confidence. d. Construct a 97.5% confidence interval for the mean reduction in total cholesterol for patients who take this combination of drugs. e. Based on the confidence interval is it likely that the mean reduction in cholesterol level is less than 0.90? 56. The Institute for College Access and Success reported that 67% of college students in 2008 graduated with student loan debt. A random sample of 85 graduates is drawn. a) Find the mean of the sampling distribution.. Mô - P-0.17 b) Find the standard deviation of the sampling distribution. 10+ p = √p(1-b) = √√0.67 (1067) = 0,051 c) Find the probability that less than 60% of the people in the sample were in debt. (67, 0.051)20-10849584 sample were in debt.
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