185***242021-03-21 16:16:30
老师,R20第32题,直接表3里三个标准差平方求和再开方可以么,结果0.796%也很接近正确答案,但会比答案的过程省时间很多,可不可以请老师讲下理由。另外这个case计算量这么大,基本一眼看不出 答案,感觉很难,考试会有这种难度的题么
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Chris Lan2021-03-22 20:32:29
同学你好
这个题协会已经删除了,不要再做了,其中的29-32题全部删除了。
以下是协会的勘误内容。
[Update:] In the information for questions 23-32 (page 223-225 of print), the paragraph before Exhibit 2, Exhibit 2, the paragraph before Exhibit 3, and Exhibit 3 should all be deleted. Questions 29-32 (page 226 of print) and their solutions (page 237-239 of print) should be deleted as well. Question numbers and solution numbers need to be updated accordingly, as it relates to removal of the previous questions and solutions.
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