Question

The table below describes the smoking habits of a group of asthma sufferers.Light HeavyNonsmokerTotalsmoker smokerMen 42536502Women 31940 402Total 7447981 9044143If two different people are randomly selected from the 904 subjects, find the probability that they are both heavy smokers, Round to six decimal places.A. 0.007938B. 0.002057C. 0.000152D. 0.992062

Answer 1

total of heavy smokers: 81

total of people: 904

P(both heavy smokers) = P(first heavy smoker)*P(second heavy smoker)

= (81/904)*(80/904) = 0.007938