Concept explainers
Astrology. An experiment is done to test the value of astrology for patients at a nursing home. A vibrant experimenter interviews the patients extensively and then casts detailed horoscopes of 100 elderly patients. They are observed immediately afterward and an estimate is made of how happy they are at the end of the process. One hundred other patients who were not interviewed are also measured for happiness and are found to be less happy. Does astrology work?

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Chapter 9 Solutions
The Heart of Mathematics: An Invitation to Effective Thinking, WileyPLUS NextGen Card with Loose-leaf Set Single Semester: An Invitation to Effective Thinking (Key Curriculum Press)
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Introductory Statistics
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A Problem Solving Approach To Mathematics For Elementary School Teachers (13th Edition)
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