2 Evaluate the sampling plan and the sample actually selected.

Production magazine is a monthly publication of the Bramson Publishing Company of Bloomfield Hills, Michigan, a suburb of Detroit. Production serves the production metal- working market, which includes the following manufacturing industries under U.S. government Standard Industrial Classifications (SIC) for two-digit codes:

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SIC code Business and industry Circulation 25 33 34 35 Furniture and fixtures Primary metal Fabricated metal products Machinery, except elect'.cal 1,388 2,515 13,911 24,753 36 Electric and electronic equipment 16,990 37 Transportation equipment 12,781 38 Instruments and related products 5,730 39 Miscellaneous manufacturing industries 1,688 50 Steel service centers 669 Total 80,425