Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean μ=287 days and standard deviation σ=16 days. Complete parts (a) through (f) below. (a) What is the probability that a randomly selected pregnancy lasts less than 281 days
Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean μ=287 days and standard deviation σ=16 days. Complete parts (a) through (f) below. (a) What is the probability that a randomly selected pregnancy lasts less than 281 days
Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
Publisher:Carter
Chapter10: Statistics
Section10.4: Distributions Of Data
Problem 19PFA
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Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean
μ=287 days
and standard deviation
σ=16 days.
Complete parts (a) through (f) below.(a) What is the probability that a randomly selected pregnancy lasts less than
281
days?(c) What is the probability that a random sample of
20
pregnancies has a mean gestation period of
281
days or less?The probability that the mean of a random sample of
20 pregnancies is less than 281 days is approximately ________.
(Round to four decimal places as needed.)
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