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← Acne Medication - t-Critical Values - Intro to Inferential Statistics

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Showing Revision 1 created 08/22/2016 by Udacity Robot.

  1. 现在来计算 α 水平在 0.05 时双尾检验的 t 临界值
  2. 因为是双尾检验 所以 t 临界值应是
  3. 正负多少?