• 2022-05-27
    设总体[img=101x27]18033e12676f9de.png[/img],[img=36x26]18033e1270720ee.png[/img]未知,从总体中抽取容量为9的样本,测得样本均值[img=11x18]18033e12799eff3.png[/img]=1.56, 样本方差[img=16x22]18033e128279d93.png[/img]=0.81,取置信水平为95%,则以下哪个说法是正确的?(备用数据为:[img=136x27]18033e128a58eae.png[/img][img=136x27]18033e129365326.png[/img][img=142x27]18033e129bdcc0b.png[/img][img=142x27]18033e12a7bcac7.png[/img][img=127x27]18033e12b5d525f.png[/img][img=127x27]18033e12be25b81.png[/img][img=133x27]18033e12c79de58.png[/img][img=133x27]18033e12d0a8ee1.png[/img])‍
    A: [img=18x22]18033e12d8ee39d.png[/img]的双侧置信区间为(0.3695,2.9725)
    B: [img=18x22]18033e12d8ee39d.png[/img]的单侧置信上限为2.3710
    C: [img=18x22]18033e12d8ee39d.png[/img]的双侧置信区间为(0.4179,2.3710)
    D: [img=18x22]18033e12d8ee39d.png[/img]的双侧置信区间为(0.3406,2.400)
    E: [img=18x22]18033e12d8ee39d.png[/img]的单侧置信上限2.9725
    F: [img=18x22]18033e12d8ee39d.png[/img]的单侧置信上限0.4179
    G: [img=18x22]18033e12d8ee39d.png[/img]的单侧置信上限2.4
    H: [img=18x22]18033e12d8ee39d.png[/img]的单侧置信上限1.9489
  • 举一反三