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Sleeping outlier: A simple random sample of eight college freshmen were asked how many hours of...

Sleeping outlier: A simple random sample of eight college freshmen were asked how many hours of sleep they typically got per night. The results were:

8.5 7.5 6.5 9 24 6 8.5 8

Notice that one joker said that he sleeps 24 hours a day.

The data contain an outlier that is clearly a mistake. Eliminate the outlier, then construct a confidence interval for the mean amount of sleep from the remaining values. Round the answers to two decimal places.

A 90% confidence interval for the mean amount of sleep from the remaining values is ____< u <_____

Math   Statistics-And-Probability   
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