• 2022-06-14
    假设已知题2中60名学生的考试成绩满足正态分布,则其均值与标准差的区间估计为:
    A: [80.1000,82.6085], [8.2310,9.7106]
    B: [77.5915,82.6085],[8.2310,11.8436]
    C: [67.5915,72.6085], [8.2310,11.8436]
    D: [57.5915,52.6085],[7.2310,21.8436]
  • 举一反三