medium · MCAT chem-phys

A statistics student finds a p-value of 0.03 in a study comparing a new drug to a placebo.

What is the most accurate interpretation of this result?

  1. The null hypothesis has been definitively proven false by this test.
  2. The drug is 97% likely to be effective for patients in the population.
  3. There is a 3% probability of obtaining these results if the drug has no effect.
  4. The effect size of this drug is necessarily large and clinically significant here.

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