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Mathematics
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OpenStudy (handymani):
A university is carrying out a survey to study the number of hours students sleep at night during exam week. A sample of 20 students was drawn, and these responses were obtained: 6.5, 5, 6, 5.5, 7, 4, 4.5, 5, 6, 5.5, 4, 7.5, 6, 7, 8, 5, 6, 6.5, 6.5, 5. What is the sample mean of the data? A.4.833 hours B.5.805 hours C.5.825 hours D. 5.915 hours
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