An ad for Crest Whitestrips Premium claims that the strips will whiten teeth in

Question

An ad for Crest Whitestrips Premium claims that the strips will whiten teeth in 7 days and the results will last for 12 months. A researcher who wishes to test this claim studies 20 sets of identical twins. Within each set of twins, one is randomly selected to use Crest Whitestrips Premium in addition to regular brushing and flossing, white the other just brushes and flosses. Whiteness of teeth is measured at the beginning of the study, after 7 days, and every month thereafter for 12 months What type of experimental design is this? Select one: O a. Block O b. Completely randomized O c. Matched pairs

Explanation / Answer

This is a Matched Pairs Experimental Design because in above problem subject are grouped into a pairs (i.e.twins) and within each twins or pairs , one subject is randomly selected to apply treatment like brushing ,flossing etc.

Related Questions

Navigate

• Browse (All)
• Browse A
• Subjects

---

---

Integrity-first tutoring: explanations and feedback only — we do not complete graded work. Learn more.