The University Bookstore is facing signifi cant competition from off-campus bookstores, and they are considering targeting a specifi c class in order to retain student business. The bookstore randomly sampled 150 freshmen and 175 sophomores. They found that 46 percent of the freshmen and 40 percent of the sophomores purchase all of their textbooks at the University Bookstore. At α = 0.10, is there a signifi cant difference in the proportions of freshman and sophomores who purchase entirely at the University Bookstore?

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