Before Hypothesis Testing and at the Beginning of a Study

Multiple Choice

Before hypothesis testing and at the beginning of a study, a researcher is advised to conduct _____ because it _____.

A) a power analysis; tells the researcher the number of participants needed for trustworthy results
B) an effect size estimate; tells the researcher the number of participants needed for trustworthy results
C) a statistical significance; determines how meaningful the study results will be
D) alpha testing; determines how meaningful the study results will be