joe and matthew plan to visit a bookstore. based on their previous visits to this bookstore, the probability distributions of the number of books they will buy are given below. a figure is shown with two tables, each with two rows. the top table has a top row that reads number of books joe will buy, 0, 1, 2, and a bottom row that reads probability, 0.50, 0.25, 0.25. the bottom table has a top row that reads number of books matthew will buy, 0, 1, 2, and a bottom row that reads probability, 0.25, 0.50, 0.25. assuming that joe and matthew make their decisions independently, what is the probability that they will purchase no books on this visit to the bookstore?
