Many people believe that the average number of Facebook friends is 135. The population standard deviation is 36.8. A random sample of 42 high school students in a particular county revealed that the average number of Facebook friends was 159. At a =0.10, is there sufficient evidence to conclude that the mean number of friends is greater than 135? Ho: H1:

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Many people believe that the average number of Facebook friends is 135. The population standard deviation is 36.8. A random
sample of 42 high school students in a particular county revealed that the average number of Facebook friends was 159. At
a =0.10, is there sufficient evidence to conclude that the mean number of friends is greater than 135?
Ho:

H1:

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