The cold medicine Dozenol lists 600 milligrams of acetominophen per fluid ounce as an active ingredient. The

Question:

The cold medicine Dozenol lists 600 milligrams of acetominophen per fluid ounce as an active ingredient. The Food and Drug Administration tests 65 one-ounce samples of the medicine and finds that the mean amount of acetominophen for the sample is 589 milligrams with a standard deviation of 21 milligrams. Test the claim of the FDA that the medicine does not contain the required amount of acetominophen.