SOLUTION: Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean mu equals 117 days and standard deviation sigma equals 10 days . &

SOLUTION: Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean mu equals 117 days and standard deviation sigma equals 10 days . &

Algebra.Com

Question 1117594: Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean mu equals 117 days

and standard deviation sigma equals 10 days
.
(a) What is the probability that a randomly selected pregnancy lasts less than 113

days?
Answer by Boreal(15235) (Show Source): You can put this solution on YOUR website!
z<(x-mean)/sd
z<-4/10
That probability is 0.3446
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