• 2022-06-01
    设总体X~N(0,9),[img=17x17]1803bf66263065d.png[/img],[img=17x17]1803bf662db7882.png[/img],[img=17x17]1803bf6635b4199.png[/img],[img=17x17]1803bf663d7b343.png[/img]是来自总体X的样本,下列判断正确的是
    A: [img=102x46]1803bf6645f0c16.png[/img]
    B: [img=232x46]1803bf664d82aa6.png[/img]
    C: [img=133x57]1803bf665ae95cb.png[/img]
    D: [img=83x50]1803bf66633f59c.png[/img]
  • 举一反三