A company claims to have a new medication to lower total cholesterol. It claims that those on the drug will lower their cholesterol more than those not taking the drug. 16 people are tested, then half will receive the new drug and half will receive a placebo. After one month, their cholesterol is checked again. The changes, in mg/dl, are below

New Drug 20 35 18 Placebo 7 15 9 2 3 7 6 4 0 8 10 1 4