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14.四个样本率作比较,x2>x20.05,v可认为()

单选题
2021-09-01 19:07
A、各总体率不同或不全相同
B、各总体率均不相同
C、各样本率均不相同
D、各样本率不同或不全相同
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正确答案
A

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