In a recent study, volunteers who had 8 hours of sleep were three times more likely to answer questions correctly on a math test
than were sleep-deprived participants. Complete parts a through d? A) The sample is the sleep-deprived participants in the study.
B) The sample is the responses of the volunteers in the study.
C) The sample is the amount of sleep the volunteers got in the study.
D) The sample is the math questions in the study.
