In a survey of 400 Latin music downloads in a certain year, 200 were regional (Mexican/Tejano), 110 were pop-rock, 75 were tropical (salsa/merengue/cumbia/bachata), and 15 were urban (reggaeton). Calculate the following relative frequencies. (a) that a music download was pop-rock (b) that a music download was neither tropical nor regional (c) that a music download was not regional

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