ounsellors of a large university are concerned that students do not have enough sleep. A statistical study was conducted to estimate the average number of hours of sleep per night among students. A 99% confidence interval is computed from a random sample and found to be 7 ± 3. We may conclude that ______________. A. we are 99% confident that the average number of hours of sleep per night of the university students in the sample is between 4 and 10 hours B. if we take many, many additional random samples, and from each computed a 99% confidence interval for u (mean), approximately 99% of these intervals would contain u (mean) C. there is a 99% ch
Counsellors of a large university are concerned that students do not have enough sleep. A statistical study was conducted to estimate the average number of hours of sleep per night among students. A 99% confidence interval is computed from a random sample and found to be 7 ± 3. We may conclude that ______________.
A. we are 99% confident that the average number of hours of sleep per night of the university students in the sample is between 4 and 10 hours
B. if we take many, many additional random samples, and from each computed a 99% confidence interval for u (mean), approximately 99% of these intervals would contain u (mean)
C. there is a 99% chance that a randomly selected student would sleep between 4 and 13 hours on average.
D. Both A and B.
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