Cigarette Nicotine.

Scientists collected a simple random sample of 25 menthol cigarettes and 25nonmenthol

cigarettes. Both samples consist of cigarettes that are filtered, 100 mm long, and non-light.

The menthol cigarettes gave a mean nicotine amount of 0.87 mg and a standard deviation of

0.24 mg. The nonmenthol cigarettes gave a mean nicotine amount of 0.92 mg and a standard

deviation of 0.25 mg. The scientists claim that menthol cigarettes and nonmenthol