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Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean u = 275 days and standard deviation o =21 days. Complete part- O B. If 100 independent random samples of size n= 20 pregnancies were obtained from this population, we would expect 7 sample(s) to have a sample mean of 268 days O C. If 100 independent random samples of size n = 20 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of 268 day (d) What is the probability that a random sample of 40 pregnancies has a mean gestation period of 268 days or less?

Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean u = 275 days and standard deviation o =21 days. Complete part- O B. If 100 independent random samples of size n= 20 pregnancies were obtained from this population, we would expect 7 sample(s) to have a sample mean of 268 days O C. If 100 independent random samples of size n = 20 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of 268 day (d) What is the probability that a random sample of 40 pregnancies has a mean gestation period of 268 days or less?

MATLAB: An Introduction with Applications
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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Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean u = 275 days and standard deviation o =21 days. Complete part- O B. If 100 independent random samples of size n= 20 pregnancies were obtained from this population, we would expect 7 sample(s) to have a sample mean of 268 days O C. If 100 independent random samples of size n = 20 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of 268 day (d) What is the probability that a random sample of 40 pregnancies has a mean gestation period of 268 days or less?
Transcribed Image Text:Suppose the lengths of the pregnancies of a certain animal are approximately normally distributed with mean u = 275 days and standard deviation o =21 days. Complete part- O B. If 100 independent random samples of size n= 20 pregnancies were obtained from this population, we would expect 7 sample(s) to have a sample mean of 268 days O C. If 100 independent random samples of size n = 20 pregnancies were obtained from this population, we would expect sample(s) to have a sample mean of 268 day (d) What is the probability that a random sample of 40 pregnancies has a mean gestation period of 268 days or less?
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