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- UID
- 223275
- 帖子
- 251
- 主题
- 133
- 注册时间
- 2011-7-11
- 最后登录
- 2013-8-23
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| Yeh, I encountered exactly this question a month ago and had the same question. But you can answer that question using 2,58 sigma (as I remember you get closest answer from three choises). I hope there won't be such ambiguities on the exam. |
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发表于 2011-7-13 15:56
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