hard · MCAT

In a clinical trial comparing a new hypertensive drug to a placebo, the researcher sets α = 0.05.

If the drug actually has no effect but the study produces a p-value of 0.03, what has occurred?

  1. A Type II error (false negative).
  2. High internal validity.
  3. High statistical power.
  4. A Type I error (false positive).

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