Problem: What are the most important differences between the two groups of students?
(a) The most important reasons for American students to buy from a catalog are to save time and because it is easy, while for East Asian students it is low price.
(b) American students appear to be almost three times more likely to live far from stores than East Asian students.
(c) East Asian students are twice as likely to purchase from a catalog because of low price than American students.
(d) All of the above.