The following table cross-classifies pregnant women in the study by their body mass index (BMI) at 16 weeks gestation and whether they had pre-term delivery. What is the probability of women with BMI...

The following table cross-classifies pregnant women in the study by their body mass index (BMI) at 16 weeks gestation and whether they had pre-term delivery. What is the probability of women with BMI less than 30 and delivers pre-term?