In a sample of 87 young adults, the average time per day spent in bed asleep was
Question:
a. Construct a 99% confidence interval for the mean time spent in bed asleep.
b. Some health experts recommend that people get 8 hours or more of sleep per night. Based on the confidence interval, is it reasonable to believe that the mean number of hours of sleep for young adults is 8 or more? Explain.
c. How large would the sample have to be so that a 99% confidence interval would have a margin of error of 0.1?
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A 6 75 7 37 B No because all the val...View the full answer
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