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A study was done to compare the amount of time per day students at public and...

A study was done to compare the amount of time per day students at public and private universities spend on Facebook. The study was composed of 200 students from a private university and 300 students from a public university. The time that students at a private university spent on Facebook had a Normal distribution with a mean of 220 minutes and a standard deviation of 36 minutes. The time that students at a public university spent on Facebook had a Normal distribution with a mean of 200 minutes and standard deviation of 49 minutes. Students at a community college spend twice as much time on Facebook than students at a public university. What is the mean time that students at a community college spend on Facebook? A. 400 B. 100 C. 200 D. None of the above

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