如果按随机分布的规律取样，你的家人也应该有相同的比例。

来源: 薛成于 2017-06-13 16:08:36 [博客] [旧帖] [给我悄悄话] 本文已被阅读：次

WENXUECITY.COM does not represent or guarantee the truthfulness, accuracy, or reliability of any of communications posted by other users.