GMAT Critical Reasoning (CR) | Re: It appears that the number of people employed by a typical American so

the first sentence states that software-industry's size decreased in the 1980s and 1990s but the last premise states that the same study was repeated only on the 1980 incorporated companies. The catch is in the highlighted portions:
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It appears that the number of people employed bya typical American software firm decreased in the 1980s and 1990s. This trend is borne out by two studies, conducted 20 years apart. In a large1980 sample of randomly chosenAmerican software firms , the median size
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