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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a There is no way to tell why people quit smoking They could ha...View the full answer
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Elementary Statistics Picturing The World
ISBN: 9780321911216
6th Edition
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