Modern Business Statistics with Microsoft Excel (MindTap Course List)
5th Edition
ISBN: 9781285433301
Author: David R. Anderson, Dennis J. Sweeney, Thomas A. Williams
Publisher: Cengage Learning
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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
Modern Business Statistics with Microsoft Excel (MindTap Course List)
Ch. 11.1 - 1. Find the following chi-square distribution...Ch. 11.1 - 2. A sample of 20 items provides a sample standard...Ch. 11.1 - A sample of 16 items provides a sample standard...Ch. 11.1 - 4. The variance in drug weights is critical in the...Ch. 11.1 - John Calipari, head basketball coach for the 2012...Ch. 11.1 - The Wall Street Journal reported that Americans...Ch. 11.1 - Volatility of General Electric Stock. To analyze...Ch. 11.1 - Prob. 8ECh. 11.1 - Aerospace Part Manufacturing. The competitive...Ch. 11.1 - Costco Customer Satisfaction. Consumer Reports...
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