• 2022-05-27
    设总体[img=103x27]1802d3bccea8bba.png[/img],[img=36x26]1802d3bcd74c952.png[/img]未知. [img=86x23]1802d3bce05aaa5.png[/img]是X的简单随机样本,则μ的置信水平至少为0.90的置信区间为
    A: [img=165x48]1802d3bceb55084.png[/img]
    B: [img=171x48]1802d3bcf741c7c.png[/img]
    C: [img=111x43]1802d3bcfef8f37.png[/img]
    D: [img=117x43]1802d3bd0d39573.png[/img]
    E: [img=165x43]1802d3bd18f0373.png[/img]
    F: [img=165x48]1802d3bd239bf98.png[/img]