Question

A nationwide survey conducted by the National Cancer Society revealed the following information. Of 10,000 people surveyed, 3200 were “ heavy coffee drinkers,” and 160 had cancer of the pancreas. Of those who had cancer of the pancreas, 132 were heavy coffee drinkers. Using the data in this survey, a). Find the probability that a randomly selected person is a heavy coffee drinker. b). Find the probability that a randomly selected person is a heavy coffee drinker knowing that this person had cancer of the pancreas. c). Determine whether the events “ being a heavy coffee drinker” and “ having cancer of the pancreas” are independent events.

Answer 1