The Lengths of Human Pregnancies Are Normally Distributed with a Mean

question 158

Multiple Choice

The lengths of human pregnancies are normally distributed with a mean of 268 days and a standard deviation of 15 days. What is the probability that a pregnancy last at least 300 days?

• A) 0.0166
• B) 0.4834
• C) 0.9834
• D) 0.0179