# 6.2.31 Question Help O The lengths of pregnancies are normally distributed with a mean of 268…

6.2.31 Question Help O The lengths of pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. a. Find the probability of a pregnancy lasting 307 days or longer. b. If the length of pregnancy is in the lowest 3%, then the baby is premature. Find the length that separates premature babies from those who are not premature. Click to view page 1 of the table. Click to view page 2 of the table. – a. The probability that a pregnancy will last 307 days or longer is (Round to four decimal places as needed.)