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【单选题】
对某行业职工收入情况进行抽样调查,得知其中 80% 的职工收入在 1800 元以下,抽样平均误差为 2% 。当概率为 95.45% 时,该行业职工收入在 1800 元以下所占比重是( )A.
等于 78%
B.
大于 84%
C.
在 76% 与 84% 之间
D.
小于 76%
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