x1a2173x2222547的知识精选

下面是2×2列联表: y1y2总计x1a2173x2222547总计b46120则表中a,b的值分别为(  )...
问题详情:下面是2×2列联表: y1y2总计x1a2173x2222547总计b46120则表中a,b的值分别为()A.94,72                              B.52,50C.52,74                     ...
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