The risk of getting lung cancer at some point in one's life for men who have never smoked is about 13 in 1000. The risk for men who smoke is just over 13 times the risk for nonsmokers. (Source: Villenueve and Lau, 1994)
a. What is the base rate for lung cancer in men over a lifetime?
b. What is the approximate lifetime risk of getting lung cancer for men who smoke?