A Researcher Is Interested in the Academic Performance Differences Between

Multiple Choice

A researcher is interested in the academic performance differences between individuals using an optimistic versus a pessimistic approach to their studies.If the researcher claims a significant difference between groups,when in fact none exists,

A) a Type I error is made.
B) a Type II error is made.
C) the research hypothesis was correctly accepted.
D) the null hypothesis was correctly accepted.
E) the research hypothesis was correctly rejected.