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July 28, 2014

Homework Help: statistics

Posted by Marcus on Wednesday, October 26, 2011 at 10:41pm.

Facebook reports that the average number of Facebook friends worldwide is 175.5 with a standard deviation of 90.57. If you were to take a sample of 25 students, what is the probability that the mean number Facebook friends in the sample will be 190 friends or more?

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