• 2022-06-26
    设总体X服从[img=71x27]180318be4d88e36.png[/img],总体Y服从[img=71x27]180318be5661edd.png[/img],[img=92x23]180318be5f021f3.png[/img]与[img=84x23]180318be66f167d.png[/img]分别来自总体X和Y的简单随机样本。[img=11x14]180318be6f364c9.png[/img]未知,显著性水平为a。则[img=218x23]180318be77fe1a3.png[/img]的拒绝域为( )
    A: [img=238x67]180318be84bf862.png[/img]
    B: [img=269x67]180318be8f36cbd.png[/img]
    C: [img=269x67]180318be9adee49.png[/img]
    D: [img=269x67]180318bea5ed425.png[/img]
  • 举一反三