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In tests for pironoma, a serious disease, a false positive result indicates that people have pironoma when, in fact, they do not; a false negative result indicates that people do not have pironoma when, in fact, they do. To detect pironoma most accurately, physicians should use the laboratory test that has the lowest proportion of false positive results.

Which of the following, if true, gives the most support to the recommendation above?

正确答案: E

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[求助]逻辑分册80页第20题

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楼主
发表于 2004-2-3 17:59:00 | 只看该作者

[求助]逻辑分册80页第20题

9 (P80. 20). In tests for pironoma, a serious disease, a false positive result indicates that people have pironoma when, in fact, they do not; a false negative result indicates that people do not have pironoma when, in fact, they do. To detect pironoma most accurately, physicians should use the laboratory test that has the lowest proportion of false positive results.                      Which of the following, if true, gives the most support to the recommendation above?
(A) The accepted treatment for pironoma does not have damaging side effects.
(B) The laboratory test that has the lowest proportion of false positive results causes the same minor side effects as do the other laboratory tests used to detect pironoma.
(C) In treating pironoma patients, it is essential to begin treatment as early as possible, since even a week of delay can result in loss of life.
(D) The proportion of inconclusive test results is equal for all laboratory tests used to detect pironoma.
(E) All laboratory tests to detect pironoma have the same proportion of false negative results.
答案:E  
A是否能够起到加强的作用?C为什么是错的?
E不是就在laboratory中进行比较吗,也就是在同类中比较,不是说一般同类中比较是错的,为什么偏偏选E?
沙发
发表于 2004-2-3 20:46:00 | 只看该作者
A 无关
B 无关
C 无关
               这个病怎么严重,有没副作用和怎么来测试它都是无关的
D 无关
E 加强。
这样理解,FALSE POSITVE 结果是错误A,FLASE NEGTIVE 结果是错误B,错误率为A+B,如果每个测试的结果都有相同几率出现错B,那么最准确的就是A+B最小的。就支持题目的结论,选择A小的测试。
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