In a recent study on the effects of sleep and test results, volunteers took a math test. The volunteers who had 8 hours of sleep were three times more likely to answer questions correctly on the math test than were sleep-deprived volunteers. Complete parts a through d. Question content area bottom Part 1 (a) Identify the sample used in the study. Choose the correct answer below. A. The sample is the amount of sleep the volunteers got in the study. B. The sample is the test results of the volunteers in the study. Your answer is correct.C. The sample is the math questions in the study. D. The sample is the sleep-deprived participants in the study. Part 2 (b) What is the sample's population? Choose the correct answer below. A. The population is the collection of all the individuals who might ever complete the math test. B. The population is the collection of all the math questions from the math test. C. The population is the collection of the test results of all individuals who might ever complete the math test