A researcher plans to conduct a study to compare two groups.Based on previous research,she anticipates a medium effect size.She does a power analysis with alpha level of .05.This power analysis tells her
A) the t-test outcome and degrees of freedom she should expect.
B) the sample size she will need to observe a statistically significant finding.
C) Cohen's d for her study.
D) the practical significance of her research.
Correct Answer:
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