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假设检验和抽样估计的不同和联系:(甲)都是对总体某一数量特征的推断,都是运用概率估计来得到自己的结论;(乙)前者需要事先对总体参数作出某种假设,然后根据已知的抽样分布规律确定可以接受的临界值;(丙)后者无须事先对总体数量特征做出假设。它是根据已知的抽样分布规律作出恰当的区间,给定总体参数落在这一区间的概率。( )
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假设检验和抽样估计的不同和联系:(甲)都是对总体某一数量特征的推断,都是运用概率估计来得到自己的结论;(乙)前者需要事先对总体参数作出某种假设,然后根据已知的抽样分布规律确定可以接受的临界值;(丙)后者无须事先对总体数量特征做出假设。它是根据已知的抽样分布规律作出恰当的区间,给定总体参数落在这一区间的概率。( )
A、甲
B、甲丙
C、甲乙
D、乙丙
时间:2021-09-02 13:59
关键词:
青书学堂
平顶山学院
工商管理
统计学原理
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D
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假设检验和抽样估计的不同和联系:(甲)都是对总体某一数量特征的推断,都是运用概率估计来得到自己的结论;(乙)前者需要事先对总体参数作出某种假设,然后根据已知的抽样分布规律确定可以接受的临界值;(丙)后者无须事先对总体数量特征做出假设。它是根据已知的抽样分布规律作出恰当的区间,给定总体参数落在这一区间的概率。( )
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