标题: 再问一道逻辑题。。 [打印本页] 作者: gmatziyu 时间: 2010-2-27 17:49 标题: 再问一道逻辑题。。 prep logic 40题请教 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. 请问这题为什么选Ｂ呢？谢谢作者: 大荣 时间: 2010-2-27 18:20
事实，3%的司机在车上装了雷达探测器。33%的超速且被开了罚单的车装有雷达探测器。 结论，装雷达探测器的车更有可能超速比没有装的车。
prep logic 40题请教 
