57. We would like to obtain a 95% con dence interval for the population standard deviation study...
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57. We would like to obtain a 95% con dence interval for the population standard deviation study time using the data in Exercise 49.
a. Obtain a bootstrap sample of 1000 standard deviations and use it to form a 95% con dence interval for the population standard deviation using the percentile method.
b. Recalling that it requires normal data, use the method of Section 8.4 to obtain a 95% condence interval for the population standard deviation.
Discuss normality for the study hours data.
How does this interval compare with the percentile interval?
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Related Book For 
Modern Mathematical Statistics With Applications
ISBN: 9780534404734
1st Edition
Authors: Jay L Devore
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