1. When a woman learns she is pregnant, her doctor calculates a due date for the baby. The due date represents the date on which the baby will be born if her pregnancy lasts the mean of all length for all pregnancies. Actual lengths of pregnancy terms turns out to be normally distributed about this due date (the mean) with a standard deviation of 15 days.

About what percent of births occur within 15 days of the due date?

About what percent of births occur within 1 month of the due date (assume 30 days or 2 standard deviations-hint)?

About what percent of births occur more than three weeks before the due date?

About what percent of births occur more than three weeks after the due date?

About what percent of births occur more than 15 days before the due date? Based on your answer, do you think is it a good idea for a pregnant woman to fly to an important meeting 15 days before the due date? Explain.