+4 Suppose there is a 17.7 % probability that a randomly selected person aged 20 years or older is a smoker. In addition, there is a 14.5 % probability that a randomly selected person aged 20 years or older is male comma given that he or she smokes. What is the probability that a randomly selected person aged 20 years or older is male and smokes? Would it be unusual to randomly select a person aged 20 years or older who is male and smokes ?
