[Solution Library] Facebook Friends. Many people believe that the average number of Facebook friends is 338 . The population standard deviation is 43.2.
Question: Facebook Friends. Many people believe that the average number of Facebook friends is 338 . The population standard deviation is 43.2. A random sample of 50 high school students in a particular county revealed that the average number of Facebook friends was 350 . At \(\alpha=0.05\), is there sufficient evidence to conclude that the mean number of friends is greater than 338?
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