EBK MODERN BUSINESS STATISTICS WITH MIC
5th Edition
ISBN: 9780100475038
Author: williams
Publisher: YUZU
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Textbook Question
Chapter 11.1, Problem 7E
Volatility of General Electric Stock. To analyze the risk, or volatility, associated with investing in General Electric common stock, consider a sample of the eight quarterly percent total returns. The percent total return includes the stock price change plus the dividend payment for the quarter.
20.0 −20.5 12.2 12.6 10.5 −5.8 −18.7 15.3
- a. What is the value of the sample
mean ? What is its interpretation? - b. Compute the sample variance and sample standard deviation as measures of volatility for the quarterly return for General Electric.
- c. Construct a 95% confidence interval for the population variance.
- d. Construct a 95% confidence interval for the population standard deviation.
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Chapter 11 Solutions
EBK MODERN BUSINESS STATISTICS WITH MIC
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