• 2022-05-29
    从正态总体中随机抽取一个容量为25的随机样本,计算得到样本均值[img=53x18]1803da372c21284.png[/img],样本方差[img=49x22]1803da373583156.png[/img]。假定[img=60x27]1803da373da1e41.png[/img],要检验假设H0:[img=60x27]1803da37461403d.png[/img],则检验统计量的值为
    A: [img=75x26]1803da374e28847.png[/img]
    B: [img=84x26]1803da3756855f8.png[/img]
    C: [img=75x26]1803da375f0e490.png[/img]
    D: [img=75x26]1803da3767ac91f.png[/img]
  • 举一反三