A Researcher's Decision Regarding Whether to Reject the Null Hypothesis

Multiple Choice

A researcher's decision regarding whether to reject the null hypothesis is based on:

A) the researcher's a priori theory regarding expected group differences.
B) independent confirmation by researchers in other laboratories.
C) the probability that group differences would be observed if there was no effect of the independent variable.
D) whether the results of the study have been replicated at least once.