某市8岁正常男孩体重均有95%的人在18.39~29.45公斤,其标准差是(  )A.2.14公斤B.5.14公斤C.2.82公斤D.0....

作者: rantiku 人气: - 评论: 0
问题 某市8岁正常男孩体重均有95%的人在18.39~29.45公斤,其标准差是(  ) A.2.14公斤 B.5.14公斤 C.2.82公斤 D.0.95公斤 E.无法计算
选项
答案 C
解析

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