can you define HIV检查的准确率为95% ?

here are two version of definitions of HIV检查的准确率为95%:

1.
for each test the accuracy is 95%.
in this case 小王被感染的概率 is 95%.

2.
100 infected people take the test, 95% turn out HIV阳性. and 100 uninfected people take the test, 5% turn out HIV阳性.
this is totally different case than case one.

所有跟帖： 

• 问得好，我感觉定义的模糊才 -是这道题失败的关键。- ♀ (0 bytes) () 07/14/2004 postreply 15:50:56

• There is nothing vague -idiot94- ♀ (588 bytes) () 07/14/2004 postreply 15:59:53

• 别给别人上课来显示你的“聪明” -那叫哗众取宠- ♀ (0 bytes) () 07/14/2004 postreply 16:22:41

• LoL.. I am idiot :D -idiot94- ♀ (0 bytes) () 07/14/2004 postreply 16:48:28

• He is not“聪明”, but -sentinel- ♀ (99 bytes) () 07/14/2004 postreply 17:17:46

• 你是轮子派来的不？请跟我去兵坛，让我好好操操你 -花剪刀- ♀ (0 bytes) () 07/14/2004 postreply 17:44:26

• Blind guy, get out here! -sentinel- ♀ (0 bytes) () 07/14/2004 postreply 17:48:37

• 回复：There is nothing vague -heg- ♀ (527 bytes) () 07/14/2004 postreply 17:49:52

• Good question! -sentinel- ♀ (87 bytes) () 07/14/2004 postreply 16:14:29

• don't forgot the condition -heg- ♀ (666 bytes) () 07/14/2004 postreply 17:58:57

• I'm happy to see a real -sentinel- ♀ (291 bytes) () 07/14/2004 postreply 18:11:46

• 回复：I'm happy to see a real -heg- ♀ (348 bytes) () 07/14/2004 postreply 19:01:10

• Thanks! -sentinel- ♀ (0 bytes) () 07/14/2004 postreply 19:05:47

• ok, if it is the second case: -junjunbos- ♀ (391 bytes) () 07/14/2004 postreply 18:18:44

• 2%的答案大错特措了！不可能这么低！ -不轻易下结论- ♀ (10 bytes) () 07/14/2004 postreply 18:57:59

• well, according to definition -junjunbos- ♀ (70 bytes) () 07/14/2004 postreply 19:04:51

• 你的论证很有意思，可以称作悖论了。 -不轻易下结论- ♀ (98 bytes) () 07/14/2004 postreply 19:11:15