Reference no: EM13578708

The following data were collected in a clinical trial to compare a new drug to a placebo for its effectiveness in lowering total serum cholesterol. Generate a 95% confidence interval for the proportion of all patients with total cholesterol < 200

1) Upper limit of CI

2) Lower limit of CI

3) How many patients would be required to ensure that a 95% confidence interval has a margin of error not exceeding 5% n=

                                                              New Drugs                Placebo                          Total Sample

                                                                 n=75                       n=75                                  n=150

Mean (SD) Total serum                        185.0 (24.5)               204.3(21.8)                       194.7(23.2)

Cholesterol

% patients with total                             78%                             65.0%                              71.5%

Cholesterol<200