Many people believe that the average number of Facebook friends is140

. The population standard deviation is36.7

. A random sample of35

high school students in a particular county revealed that the average number of Facebook friends was166

. At a=0.05, is there sufficient evidence to conclude that the mean number of friends is greater than140?

State the hypotheses and identify the claim with the correct hypothesis.

: H0: ?

H1: ?

59,593

Is this hypothesis tet one-tailed or two?

Critical values: ?