The National Sleep Foundation (NSF) recommends that college students get between 8 and 9 hours of...

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The National Sleep Foundation (NSF) recommends that collegestudents get between 8 and 9 hours of sleep per night. Notbelieving this is happening at a local college, a random sample of20 students resulted in a mean of 6.94 hours, with a standarddeviation of 1.1 hours.

Part 1 of 3

If it is assumed that hours of sleep for college students isapproximately normally distributed, construct and interpret a 95%confidence interval statement as well as a confidence levelstatement. Do the students at this local college meet the NSFrecommendation? (Round your answers to two decimal places. Use atable or technology.

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4.5 Ratings (1098 Votes)
Given mean 694 hoursstandard deviation 11 hoursStandard error of mean 02459675Degree of freedom df n1 20 1 19Critical value of t at 95 confidence interval and df 19    See Answer
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