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A recent report determined that although only 3 percent of drivers on Maryland highways equipped their vehicles with radar detectors, 33 percent of all vehicles ticketed for exceeding the speed limit were equipped with them. Clearly, drivers who equip their vehicles with radar detectors are more likely to exceed the speed limit regularly than are drivers who do not.

The conclusion drawn above depends on which of the following assumptions?

正确答案: B

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想不通的一点,请大家指点一下

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楼主
发表于 2011-8-3 14:50:58 | 显示全部楼层
注意大前提,全市人口中只有3%的人装了雷达,所以按照正常的推测,也应该是3%的人超速,但是现在被罚超速的人有33%,所以装了容易被罚,而且被罚的人更容易超速。
沙发
发表于 2011-8-3 14:52:07 | 显示全部楼层
第四话表达错了,应该是被罚的人有3%装了雷达。
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