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标题: OG10-157 [打印本页]
作者: 玫牡昙 时间: 2009-2-7 11:21
标题: OG10-157
Companies O and P each have the same number of employees who work the same number of hours per week. According to records maintained by each company, the employees of Company O had fewer job-related accidents last year than did the employees of Company P. Therefore, employees of Company O are less likely to have job-related accidents than are employees of Company P
157.
Which of the following, if true, would most weaken the conclusion above?
(A) The employees of Company P lost more time at work due to job-related accidents than did the employees of Company O.
(B) Company P considered more types of accidents to be job-related than did Company O.
(C) The employees of Company P were sick more often than were the employees of Company O.
(D) Several employees of Company O each had more than one job-related accident.
(E) The majority of job-related accidents at Company O involved a single machine
正确选项是b,为什么说P公司的事故类型多于O公司,就能weak the conclusion?
作者: stevexdx 时间: 2009-2-7 13:50
应该是说P公司把更多类型的事故归于job-related事故,因此看起来比O公司(不把某些类型的事故算进总数)发生事故要多。
要点是比较范围(标准)不一致,导致结论被削弱。
作者: 玫牡昙 时间: 2009-2-7 14:03
谢谢stevexdx,我懂啦~
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