Question: When a researcher concludes that there are no differences between the treatment and control groups in a study, and in fact, there were no differences

  1. When a researcher concludes that there are no differences between the treatment and control groups in a study, and in fact, there were no differences between the conditions.The researcher is illustrating
  2. Type I error.
  3. Type II error.
  4. both Type I and Type II error.
  5. a correct decision.

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