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某大型企业要提出一项改革措施,为估计职工中赞成该项改革的人数的比例,要求估计 误差不超过 003,置信水平为90﹪,应抽取的样本量为()。

单选题
2021-09-02 16:38
A、552
B、652
C、752
D、852
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正确答案
C

试题解析

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