When a research report demonstrates a significant treatment effect at the .05 level, you can be more confident that the effect is real than if the researcher had reported a significant effect with an alpha level of only .01.

Question

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A significant effect at the .01 level indicates a stronger level of statistical significance compared to the .05 level, meaning there is a lower probability that the observed effect is due to chance, thus increasing confidence in the reality of the effect.

When a Research Report Demonstrates a Significant Treatment Effect at the .05