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Mathematics, 27.11.2019 00:31 brandicarney70p8jlsp

Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean mu equals 269 days and standard deviation sigma equals 22 days. complete parts a. through c.

a. what is the probability that a randomly selected pregnancy lasts less than 262 days?
b. what is the probability that a random sample of 28 pregnancies has a mean gestation period of fewer than 262 days?
c. what is the probability that a random sample of 53 pregnancies has a mean gestation period of fewer than 262 days?

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