Mathematics, 27.10.2020 01:10, nakeytrag

Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean mu equals 263 days and standard deviation sigma equals 18 days. Complete parts (a) through (f) below.
a.(a) What is the probability that a randomly selected pregnancy lasts less than 257 days?
The probability that a randomly selected pregnancy lasts less than 257
days is approximately .
(Round to four decimal places as needed.)

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Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed wi...