Researchers examine the association between the fluoridation of water and the prevention of tooth decay by comparing

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Researchers examine the association between the fluoridation of water and the prevention of tooth decay by comparing the prevalence of tooth decay in countries that have fluoridated water with the prevalence in countries that do not.

a. Is this a randomized experiment or an observational study?

b. Assume that tooth decay was seen to be less common in countries with fluoridated water. Could this result be due to confounding? Explain.

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Elementary Statistics

ISBN: 9781259969454

3rd Edition

Authors: William Navidi, Barry Monk

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Question Posted: Apr 30, 2024 08:54 AM

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Researchers examine the association between the fluoridation of water and the prevention of tooth decay by comparing

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a This is an observational study In this study researchers are observing the effect of a risk fa...View the full answer

Elementary Statistics

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