Statistics, Books a la Carte Edition Plus MyLab Statistics with Pearson eText -- Access Card Package (4th Edition)
4th Edition
ISBN: 9780134435855
Author: Alan Agresti, Christine A. Franklin, Bernhard Klingenberg
Publisher: PEARSON
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Textbook Question
Chapter 4.1, Problem 13PB
What’s more to blame for obesity? In a study published in the July 7, 2014, edition of the American Journal of Medicine, it was suggested that lack of exercise contributed more to weight gain than eating too much. The study examined the current exercise habits and caloric intake of a sample of both males and females. (Source: http://www.cbsnews.com/news/whats-more-to-blame-for-obesity-lackof-exercise-or-eating-too-much/)
- a. Was this an observational study or an experimental study? Explain why.
- b. Identify the response variable and the explanatory variable(s).
- c. Does this study prove that lack of exercise causes weight gain more often than eating too much?
- d. It was reported that women younger than 40 are quite vulnerable to the risks of a sedentary lifestyle. Name a lurking variable that might explain this risk of a sedentary lifestyle for these younger women that in turn leads to little exercise and/or eating more.
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Chapter 4 Solutions
Statistics, Books a la Carte Edition Plus MyLab Statistics with Pearson eText -- Access Card Package (4th Edition)
Ch. 4.1 - Cell phones Consider the cell phone Study 3...Ch. 4.1 - High blood pressure and binge drinking Many...Ch. 4.1 - Low-fat versus low-carb diet? One hundred...Ch. 4.1 - Experiments versus observational studies When...Ch. 4.1 - School testing for drugs Example 3 discussed a...Ch. 4.1 - Hormone therapy and heart disease Since 1976 the...Ch. 4.1 - Speaking foreign languages A 2014 study...Ch. 4.1 - Breast-cancer screening A study published in 2010...Ch. 4.1 - Experiment or observe? Explain whether an...Ch. 4.1 - Baseball under a full moon During a baseball game...
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