Friend me? One hundred fifty-eight teenagers are standing in line for a big movie premier night. (See Exercise 7.) a) What are the mean and standard deviation of the number of Facebook users we might...

Friend me? One hundred fifty-eight teenagers are standing in line for a big movie premier night. (See Exercise 7.)

a) What are the mean and standard deviation of the number of Facebook users we might expect?

 b) Can we use a Normal model in this situation?

c) What the probability that no more than 110 of the teenagers are Facebook users?