The lengths of pregnancies are normally distributed with a mean of 267 days and a standard deviation of 15 days. a. find the probability of a pregnancy lasting 308 das or longer. b-if the length of pregnancy is in the lowest 2% then the baby is premature. Find the length that separates premature babies from those that are not premature.

a. the probability that a pregnancy will last 308 days or longer is___( round to 4 decimal places)

b. Babies who are born on or before ____days are considered premature(round to the nearest integer as needed