Assume that the duration of human pregnancies can be described by a Normal model with mean 266 days and standard deviation 14 days. a) What percentage of pregnancies should last between 268 and 278 days? b) At least how many days should the longest 25% of all pregnancies last? c) Suppose a certain obstetrician is currently providing prenatal care to 62 pregnant women. Let y represent the mean length of their pregnancies. According to the Central Limit Theorem, what's the distribution of this sample mean, y? Specify the model, mean, and standard deviation. d) What's the probability that the mean duration of these patients' pregnancies will be less than 257 days? a) The percentage of pregnancies that should last between 268 and 278 days is %. (Round to two decimal places as needed.)

Assume that the duration of human pregnancies can be described by a Normal model with mean 266 days and standard deviation 14 days. a) What percentage of pregnancies should last between 268 and 278 days? b) At least how many days should the longest 25% of all pregnancies last? c) Suppose a certain obstetrician is currently providing prenatal care to 62 pregnant women. Let y represent the mean length of their pregnancies. According to the Central Limit Theorem, what's the distribution of this sample mean, y? Specify the model, mean, and standard deviation. d) What's the probability that the mean duration of these patients' pregnancies will be less than 257 days? a) The percentage of pregnancies that should last between 268 and 278 days is %. (Round to two decimal places as needed.)

MATLAB: An Introduction with Applications

6th Edition

ISBN:9781119256830

Author:Amos Gilat

Publisher:Amos Gilat

Chapter1: Starting With Matlab

Section: Chapter Questions

Problem 1P

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