A clinical trial is run comparing a new drug for high cholesterol to a placebo. A total of 40 participants are randomized to recieve either the new drug or placebo. Participants getting new drug...

A clinical trial is run comparing a new drug for high cholesterol to a placebo. A total of 40 participants are randomized to recieve either the new drug or placebo. Participants getting new drug reported a mean total of 209.5 (sd=21.6) and placebi mean of 228.1 (sd=19.7). Construct 95% CI for the difderence in mean total cholesterol levels between participants recieving the new drug versus placebo.