The Lengths of Pregnancies Are Normally Distributed with a Mean

Multiple Choice

The lengths of pregnancies are normally distributed with a mean of 264 days and a standard deviation of 15 days. If 36 women are randomly selected, find the probability that they have a mean pregnancy between 264
Days and 266 days.

A) 0.2881
B) 0.7881
C) 0.2119
D) 0.5517