The length of pregnancies are normally distributed with a mean of 267 days and a standard deviation of 15 days.

If the length of pregnancy is in the lowest 4%, then the baby is considered to be premature. Find the length of pregnancy that separates the premature babies from those who are not premature. (Round to nearest integer.) This is the fourth percentile

a	275
b	241
c	104
d	269

The length of pregnancies are normally distributed with a mean of 267 days and a standard deviation of 15 days.

What is the 75^th percentile, P75, of distribution of all sample means for random samples of size 17 from the population of lengths of pregnancies? (This is the sample mean score that separates the bottom 75% of sample means from the top 25%.)

a	275
b	269
c	241
d	275
e	104