9) Suppose the gestation period (length of pregnancy) for a certain species of mammal is Normally distributed with of 175 days, and standard deviation of 3.5 days. a) What proportion of pregnancies last less than 172 days? b) What proportion of pregnancies last longer than 172 days? c) 10% of these pregnancies last less than d) 30% of these pregnancies last longer than 2 days. days.

Glencoe Algebra 1, Student Edition, 9780079039897, 0079039898, 2018
18th Edition
ISBN:9780079039897
Author:Carter
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Chapter10: Statistics
Section10.5: Comparing Sets Of Data
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9) Suppose the gestation period (length of pregnancy) for a certain species of mammal is Normally distributed with
of 175 days, and standard deviation of 3.5 days.
a) What proportion of pregnancies last less than 172 days?
b) What proportion of pregnancies last longer than 172 days?
c) 10% of these pregnancies last less than
d) 30% of these pregnancies last longer than
2
days.
days.
Transcribed Image Text:9) Suppose the gestation period (length of pregnancy) for a certain species of mammal is Normally distributed with of 175 days, and standard deviation of 3.5 days. a) What proportion of pregnancies last less than 172 days? b) What proportion of pregnancies last longer than 172 days? c) 10% of these pregnancies last less than d) 30% of these pregnancies last longer than 2 days. days.
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