• 2022-05-26
    设总体X服从正态分布[img=59x31]17e0af211e80619.jpg[/img],[img=83x15]17e0c3371be960f.jpg[/img]为来自该总体的样本,[img=17x24]17e0c3385527351.png[/img]为样本均值,s为样本标准差,欲检验假设[img=403x45]17e0c338628a053.png[/img],则检验用的统计量是( )
    未知类型:{'options': ['', ' [img=106x62]17e0c3387c3f450.png[/img]', ' [img=87x59]17e0c33888c9267.png[/img]', ' [img=100x64]17e0c338959ce9c.png[/img]'], 'type': 102}
  • 举一反三