What is the probability that someone who died of coronary heart disease between the ages of 75 and 84 was a smoker?

Assignment In a 1985 study, Breslow (cited in Hand et al., 1994) examined the death rates from coronary heart disease in a set of British male physicians. He also classified the doctors according to whether or not they smoked cigarettes. The table below shows the number of physicians who died from coronary heart disease. Age, […]