Statistics for Business & Economics (with XLSTAT Education Edition Printed Access Card) (MindTap Course List)
13th Edition
ISBN: 9781305585317
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams, Jeffrey D. Camm, James J. Cochran
Publisher: Cengage Learning
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Textbook Question
Chapter 11.1, Problem 8E
Consider a day when the Dow Jones industrial average went up 149.82 points. The following table shows the stock price changes for a sample of 12 companies on that day.
- a. Compute the sample variance for the daily price change.
- b. Compute the sample standard deviation for the price change.
- c. Provide 95% confidence
interval estimates of the population variance and the population standard deviation.
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Chapter 11 Solutions
Statistics for Business & Economics (with XLSTAT Education Edition Printed Access Card) (MindTap Course List)
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