In 2009, according to a Harris Interactive poll, 52% of American college graduates have Facebook accounts. Suppose that this result is true for the current populations.

Let x be a binomial random variable that denotes the number of American College graduates in a random sample of 15 who have Facebook accounts.

Show your work.

a) What are the possible values that x can assume?

b) Find the probability that 9 of the 15 people have a Facebook account.