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Consider a sample with M = 16 and s2 = 25. A researcher is testing the null hypothesis that = 20. Which statement is correct?

Consider a sample with M = 16 and s2 = 25. A researcher is testing the null hypothesis that = 20. Which statement is correct? Group of answer choices The treatment has a large effect size (Cohen's d). The treatment has a moderate effect size (Cohen's d). The treatment has a small effect size (Cohen's d). The treatment has a statistically significant effect

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