Question
The length of human pregnancies from conception to birth varies according to a distribution that is approximately Normal with mean = 266, days, and standard
The length of human pregnancies from conception to birth varies according to a distribution that is approximately Normal with mean = 266, days, and standard deviation = 16 , days. A study enrolls a random sample of 18 pregnant women.
What is the probability that a random sample of pregnant women has a sample mean pregnancy length that isless than or equal to 270 days?
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Practical Linear Algebra A Geometry Toolbox
Authors: Gerald Farin, Dianne Hansford
3rd Edition
1466579587, 9781466579583
