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8. If the four-rm concentration ratio for the market for diapers is 73 percent, then this industry is best characterized as a. a monopoly. b.

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8. If the four-rm concentration ratio for the market for diapers is 73 percent, then this industry is best characterized as a. a monopoly. b. monopolistic competition. 0. an oligopoly. d. perfect competition. e. either a monopoly or monopolistic competition

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