The lengths of a particular animal's pregnancies are approximately normally distributed, with mean mu equals 259 days and standard deviation sigma equals 16 days. (a) What proportion of pregnancies lasts more than 263 days? (b) What proportion of pregnancies lasts between 255 and 267 days? (c) What is the probability that a randomly selected pregnancy lasts no more than 247 days? (d) A "very preterm" baby is one whose gestation period is less than 235 days. Are very preterm babies unusual?
Get Answers For Free
Most questions answered within 1 hours.