• 2022-06-03
    设总体X ~ N(m,s 2),X1,X2,…,Xn是来自总体X的样本,则[img=43x27]1802f2c52a4c221.png[/img],[img=44x27]1802f2c531b86db.png[/img]分别为:
    A: [img=36x26]1802f2c53985a89.png[/img]
    B: [img=62x27]1802f2c541ea035.png[/img]
    C: [img=56x27]1802f2c549b31d0.png[/img]
    D: [img=67x27]1802f2c55233b87.png[/img]
  • 举一反三