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题库 / OG12-CR-78
A recent report determined that although only three percent of drivers on Maryland highways equipped their vehicles with radar detectors, thirty-three 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?
Drivers who equip their vehicles with radar detectors are less likely to be ticketed for exceeding the speed limit than are drivers who do not.
Drivers who are ticketed for exceeding the speed limit are more likely to exceed the speed limit regularly than are drivers who are not ticketed.
The number of vehicles that were ticketed for exceeding the speed limit was greater than the number of vehicles that were equipped with radar detectors.
Many of the vehicles that were ticketed for exceeding the speed limit were ticketed more than once in the time period covered by the report.
Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report.
原文说：因为超速而贴罚单的司机33%装了某设备，结论是：装了某设备的司机更有可能比没有装的司机经常超速。问假设。
B：因为超速而贴罚单的司机更有可能比没有贴罚单的司机经常超速。
33%在这里显然表示的是一个程度，表明“很多”“大多数”。进而此题可以理解为：某类人（装设备的司机）具备某特质（因超速而贴罚单），说某类人更有可能怎么样，其实也就是说具备某特质的人更有可能怎么样，也就是答案B
需要注意的是：先告诉3%的司机装了设备，再给出33%的司机贴罚单，这一点很重要，否则33%就是一个干扰项目，因为33%无法代表大多数司机，无法表示程度，只有在前面有了3%的对比限制之后，此题才能认为B正确。
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