The following table shows the probability distribution for the number of books a student typically buys at the annual book fair held at an elementary school. Number of Books 1 4 6 7. Probability 0.35 0.20 0.15 0.10 0.07 0.08 0.04 0.01 Let the random variable B represent the number of books a student buys at the next book fair. If each book costs an average of $5, what is the expected amount of money spent on books for a randomly selected student? $140.00 $5.00 $17.50 $8.95 OO OO

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