A researcher is interested in the academic performance differences between individuals using an optimistic versus a pessimistic approach to their studies.If the researcher fails to find a
Significant difference, when in fact one exists in the population:
A)the null hypothesis was correctly accepted.
B)the research hypothesis was correctly accepted.
C)the null hypothesis was correctly rejected.
D)a Type 2 error has been made.
E)a Type 1 error has been made.

Question

Quizplus · Accepted Answer

A Type 2 error occurs when the null hypothesis is not rejected, but it should have been because there is a true effect or difference in the population that the study failed to detect.

A Researcher Is Interested in the Academic Performance Differences Between