A scientific study was conducted to determine the hours of sleep that college students get per night. The study surveyed

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A scientific study was conducted to determine the hours of sleepthat college students get per night. The study surveyed 29 collegestudents and obtained the following data:8.5, 8.6, 7.9, 9, 7.9, 8.8, 7.9, 8.4, 7.7, 7.8, 8.5, 7.2, 7.7, 7.8,7.9, 7.9, 8.6, 8.8, 7.9, 6.9, 7.8, 7.2, 7.4, 7.9, 7.9, 8.2, 8.1,8.5, 7.5Assuming the population standard deviation is σ=0.68σ=0.68,construct a 85% confidence interval for the average hours of sleepper night that college students get.