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← t-Statistic - Intro to Inferential Statistics

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Showing Revision 1 created 08/24/2016 by Udacity Robot.

  1. 正确答案是 -2.5 t 统计量的计算公式是 x 拔减去 μ

  2. 再除以均值的标准误差
  3. 即 (126-151)/10 = -25/10 = -2.5