In a study of the effects of smoking, 9793 pregnant women were asked about their smoking habits. The following classiﬁes each by whether their infant was low birthweight (less than 2500 grams) or normal birthweight, and whether they smoked: Birthweight Smoking status Smoker Nonsmoker Total Low 237 197 434 Normal 3489 5870 9359 Total 3726 6067 9793 One woman was chosen at random from the group. (a) What is the probability that the woman is nonsmoker? (b) What is the probability of the woman’s baby was born with low birthweight? (c) Given that the woman smokes, what is the probability of her baby was born with low birthweight?