scientific study was conducted to determine the hours of sleep that college students get per night. The study surveyed 21 college students and obtained the following data: 7.7, 7.1, 8.2, 8.2, 6.9, 7.4, 7.5, 8.8, 9.4, 7.7, 6.8, 7.3, 7.8, 7.8, 6.9, 9, 7.6, 7, 7.6, 7.5, 6.2 Assuming the population standard deviation is σ=0.84σ=0.84, construct a 98% confidence interval for the average hours of sleep per night that college students get. xˉ= α/2= zα/2= Margin of Error: E= We are 98% confident that college students get an average of between                                   hours and                     hours of sleep per night.

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