Exercise 10.76 describes a dental experiment conducted to
Chapter 12, Problem 13E(choose chapter or problem)
Exercise 10.76 describes a dental experiment conducted to investigate the effectiveness of an oral rinse used to inhibit the growth of plaque on teeth. Subjects were divided into two groups: One group used a rinse containing the antiplaque agent, and the control group used a rinse with only inactive ingredients. Another experiment has been performed to assess the growth of plaque for individuals who have used the rinse with the antiplaque agent. For each person in the study, plaque buildup was measured 4 hours after using the rinse and again after 8 hours. If you
wanted to compare the mean plaque buildup for the two different times, would you implement an analysis based on a matched-pairs or independent samples procedure? Why?
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