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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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楼主
发表于 2003-12-31 10:33:00 | 只看该作者

请教大全-9-16

16. 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?
(A) 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.
(B) 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.
(C) 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.
(D) 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.
(E) Drivers on Maryland highways exceeded the speed limit more often than did drivers on other state highways not covered in the report.

答案是B,题干没提重复遭ticket的情况啊,为什么是B呢?哪位帮忙解释?

沙发
发表于 2003-12-31 11:14:00 | 只看该作者
题干:3%的driver装了测速器,33%的被查到超速的装了测速器---->装了测速器的人比没装的人更容易经常超速。
GAP: 被查到超速的人比没没查到的人更容易经常超速。
板凳
 楼主| 发表于 2003-12-31 11:20:00 | 只看该作者
多谢!
地板
发表于 2010-6-7 11:14:28 | 只看该作者
如果B中被查到超速的人比没没查到的人更容易经常超速的话,不就说明了这个现象不能代表整体装雷达的车的现象吗?,不就削弱了吗????  纠结
5#
发表于 2010-6-10 22:50:23 | 只看该作者
ddddddddd
6#
发表于 2011-7-12 18:39:51 | 只看该作者
我觉得应该这样理解,原文是从3%装雷达的司机占33%被Ticek的人数这样一个现象而得出一个调查结果,说装雷达的更惯于(regularly)超速,这里就有一个GAP啦,谁说占了33%的比例就一定是”惯犯“呢,可能这个调查实行的时候,正好就逮着这些人,所以应该说明一次超速的人会经常超速。。
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