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Sophia Introduction to Statistics Unit One Milestone One
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21
October 2023
2023/2024
A+
A trainer is studying the effects of vitamin D on his athletes. He has realized that there are many potential
confounding factors, such as gender and age. To limit the effect of these confounding variables, he decided to
first group two athletes together based on these variables (for example, two 21-year-old males). Then he
randomly assigned one person to receive the vitamin D and the other to receive a sugar pill.
What type of experimental design does this situation demonstrate?
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