Please explain why the answer is not A,B,C, E or F. Problem 4 (2 points) 3 min A

Question

Please explain why the answer is not A,B,C, E or F.

Problem 4 (2 points) 3 min A study recruited 18 sleep-deprived college women and compared, for each woman, the effect of 10 minutes of moderate-intensity stair walking or a low dose (a 50-mg capsule) of caffeine. The order of the stair and caffeine conditions was randomized. The findings, published last week, show that the stair walking exercise produced a larger perceived energy boost than the caffeine capsule. This is A) a completely randomized experiment. B) a case-control observational study. C) a cross-sectional sample survey D) a matched pairs experiment. E) a longitudinal cohort study F)an unscientific study using voluntary response. Page 2 of 4

Explanation / Answer

THis is a matched pairs experiment because the same sample or set of women is given different treatments over time and their effect noted.

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