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marshayla:
A survey asked people if they prefer to read books or e-books. The results are shown in the table below. What is the marginal relative frequency of the number of people who prefer to read books? Male Female Total Read books 37 68 105 Read e-books 75 70 145 Total 112 138 250 0.57 0.49 0.43 0.42
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Vocaloid:
marginal frequency of book-readers = (# of book-readers) / (total # of people)
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