Question: 14. An advertisement for NordicTrack, an exercise machine that simulates crosscountry skiing, claimed that in just 12 weeks, research shows that people who used a

14. An advertisement for NordicTrack, an exercise machine that simulates crosscountry skiing, claimed that “in just 12 weeks, research shows that people who used a NordicTrack lost an average of 18 pounds.” Forgetting about the questions surrounding how such a study might have been conducted, what additional information would you want to know about the results before you could come to a reasonable conclusion?

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