• 2022-06-09
    从正态总体[img=65x27]1802d3c53b59586.png[/img]中取得样本容量为10的样本, 算得样本方差为4. 在置信水平为95%下,以下说法哪个是正确的?
    A: [img=18x22]1802d3c54490457.png[/img]的双侧置信区间为(1.89,13.33)‍
    B: [img=18x22]1802d3c54490457.png[/img]的单侧置信下限为2.13
    C: [img=18x22]1802d3c54490457.png[/img]的单侧置信上限为10.83‍
    D: [img=18x22]1802d3c54490457.png[/img]的双侧置信区间为(1.76,11.09)‍
    E: [img=18x22]1802d3c54490457.png[/img]的单侧置信下限为1.97‍
    F: [img=18x22]1802d3c54490457.png[/img]的单侧置信上限为9.14‍
    G: [img=18x22]1802d3c54490457.png[/img]的单侧置信下限为1.89‍
    H: [img=18x22]1802d3c54490457.png[/img]的单侧置信下限为1.76
    I: [img=18x22]1802d3c54490457.png[/img]的单侧置信上限为11.09
    J: [img=18x22]1802d3c54490457.png[/img]的单侧置信上限为13.33
  • 举一反三