The company in Example 2 identifies 240 adults who are heavy smokers. The subjects are randomly assigned
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The company in Example 2 identifies 240 adults who are heavy smokers. The subjects are randomly assigned to be in a treatment group or in a control group. Each subject is also given a DVD featuring the dangers of smoking. After four months, most of the subjects in the treatment group have quit smoking.
a. Identify a potential problem with the experimental design.
b. How could the design be improved?
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Related Book For
Elementary Statistics Picturing The World
ISBN: 9780321911216
6th Edition
Authors: Ron Larson, Betsy Farber
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