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Sleep habits of New Yorkers. New York is known as the city that never sleeps. A...

Sleep habits of New Yorkers.

New York is known as the city that never sleeps. A random sample of 9

New Yorkers were asked how much sleep they get per night. Statistical summaries of these data are shown below. Do these data provide strong evidence that New Yorkers sleep less than 8 hours a night on average? (Use significance value α=0.03.)

N       x¯           s

9 7.83        0.8


H0:μ
HA:μ
p-value:
Based on this information, we may Accept/Reject

Find a 99% confidence interval for the average number of hours of sleep by New Yorkers.

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