Which of the following industries do you expect to have high concentration ratios: automobile production, aircraft manufacture, computer and electronics production, pharmaceuticals, production of expensive jewelry?

Compare your answers with the data in Table 2.

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Table 2 Concentration Ratios and Herfindahl-Hirschman Indexes for Selected Manufacturing Industries, 2007 Industry Precision-turned products Cement and concrete products Women's and girls' dresses Fine jewelry Bolts, nuts, screws, rivets, and washers Computers and electronic products Fluid milk Sporting and athletic goods Brooms, brushes, and mops Musical instruments Dolls and stuffed toys Pharmaceutical preparations Ship and boat building Four-Firm Ratio 4.3 21.3 28.1 28.5 21.1 17.3 46.0 27.0 29.3 32.2 56.9 34.5 44.4 Herfindahl-Hirschman Index for 50 Largest Companies in the Industry 12.7 216.3 328.1 347.2 162.3 136.6 1075.3 253.4 377.1 404.6 1622.5 456.8 664.9