题目内容

卡方检验，要求每个单元格的最小期望频数都大于等于1，并且至少4/5的单元格的期望频数都大于等于5，只有满足这个条件，使用卡方分布计算出的概率值才准确，否则需要使用确切概率法进行概率的计算。

A. 对
B. 错

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Text structure1 General situation & my responses (Paras. 1 -__)2The mess left by the daughter and my responses (Paras. _ - _)3Concluding part (Paras. _ - ___)

请把unit 5 iexplore 1 相应的单词和短语写在（）里，1-15是单词，16-20是短语：

简述工作结构分解的过程和方法。

SDLC that assumes phases can be completed sequentially with no overlap or iteration. Once one phase is completed, you fall over the waterfall to the next phase, no going back. This text describes which kind of development model.

A. Iterative model
B. Agile model
C. Waterfall model
D. Incremental model