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第三节 双正态总体的假设检验

第三节 双正态总体的假设检验. 双正态总体均值差的假设检验 双总体方差相等的假设检验 例题选讲. 一 . 双正态总体均值差的假设检验. 已知情形. 1 ．方差. 二、双总体方差相等的假设检验. 例题选讲 ：. 1 ．方差已知情形. 双总体方差相等的假设检验. 例 8 ( 讲义例 6) 为比较甲、乙两种安眠药的疗效 , 将 20 名患者分成两组 , 每组 10 人 , 如服药后延长的睡眠时间分别服从正态分布 , 其数据为 ( 单位 : 小时 ):. 综上所述 , 可以认为两种安睡眠药疗效无显著差异. 课堂练习.

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第三节 双正态总体的假设检验

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  1. 第三节 双正态总体的假设检验 双正态总体均值差的假设检验 双总体方差相等的假设检验 例题选讲

  2. 一.双正态总体均值差的假设检验 已知情形 1．方差

  3. 二、双总体方差相等的假设检验

  4. 例题选讲： • 1．方差已知情形

  5. 双总体方差相等的假设检验

  6. 例8(讲义例6)为比较甲、乙两种安眠药的疗效, 将20名患者分成两组, 每组10人,如服药后延长的睡眠时间分别服从正态分布, 其数据为(单位:小时): 综上所述, 可以认为两种安睡眠药疗效无显著差异.

  7. 课堂练习

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