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NC-Math 4 CR
Observational Studies and Experiments
Question 5
5
Assignment
Multiple Choice
Observational Studies and Experiments
Question 5 • NC-Math 4 CR
Which matched pairs design is appropriate, if any? Why?
Answer
A
Both designs are equally appropriate in this situation because randomization is used.
B
Design I is appropriate because the second design would confound fatigue with the effect of music.
C
Design II is appropriate because it allows us to compare each runner to themselves. This reduces a source of variability.
D
Neither design is appropriate. The best choice is a completely randomized design.
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