Use the Following Information for Questions

Multiple Choice

Use the following information for questions:
Suppose that a student needs to buy 6 books for her history course. The number of books that she will be able to find used is a binomial random variable X with n = 6 and p = 0.30. In other words, the probability that she will find any given book used is 0.30, and is independent from one book to the next.
-What is the expected number of used books she will find, E(X) ?

A) 1.8
B) 2.0
C) 3.0
D) 6..0