The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation of 15 days. If the length of pregnancy is in the lowest 3%, then the baby is premature. Find the...

The lengths of pregnancies are normally distributed with a mean of

266 days and a standard deviation of 15 days. 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.