2-2 Module 8119 Suppose the lengths of the pregnancies of a certain animal are approximately normall

2-2 Module 8119

Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean mu equals 160 days and standard deviation sigma equals 14 days?

(c) What is the probability that a random sample of 41 pregnancies has a mean gestation period of 155 days or? less?

The probability that the mean of a a random sample of 41 pregnancies is less than 155 days is approximately

( ) ?(Round to four decimal places as? needed)