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? Round to four...

Extracted text: 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? Round to four decimal places. O A. 0.0164 O B. 0.9834 Oc. 0.0179 O D. 0.4834