The lengths of pregnancies are normally distributed with a mean of 266 days and a standard deviation of 15 days.
a. find the probability of a pregnancy lasting 309 days 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 who are not premature.

Respuesta :

B. is the correct answer.
Hope this helps!

~Nayiah~