Unformatted text preview: information do you need before you decide if the claim is believable? Consider the advertisements of toothbrushes that claim to clean teeth better because of their special bristle structure. The hypothesis attached to it is that when compared to toothbrushes with flat bristle structure, these brushes clean teeth better. To establish this claim, we need to do a case-control study, with two groups of individuals, one using flat brushes, and another using the toothbrush of the specific brand. If after the study it is established that the new brushes indeed help clean teeth better, then the claims in the ad campaigns can be believed....
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- Spring '11
- Business, general population, Question of fact