Which one of the following, if it were determined to be true, would best explain this discrepancy.
Only 10 percent of those who were polled replied.
Ford which conducted a similar survey with similar results continued to build large cars and also lost more of their market to the Japanese.
The surveyed owners who preferred big cars also preferred big homes.
GM determined that it would be more profitable to make big cars.
Eighty percent of the owners who wanted big cars and only 40 percent of the owners who wanted small cars replied to the survey.
The argument generalizes from the survey to the general car-buying population, so the reliability of the projection depends on how representative the sample is. At first glance, choice seems rather good, because 10 percent does not seem large enough. However, political opinion polls are typically based on only .001 percent of the population. More importantly, we dont know what percentage of GM car owners received the survey. Choice simply states that Ford made the same mistake that GM did. Choice is irrelevant. Choice , rather than explaining the discrepancy, gives even more reason for GM to continue making large cars. Finally, choice points out that part of the survey did not represent the entire public, so is the answer.
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