A researcher studying partisanship and the likelihood of being a protester concludes there is no difference between Democrats and Republicans when, in fact, there is, has committed a ______.
A) faux pas
B) Type I error
C) Type II error
D) Type III error

Question

Quizplus · Accepted Answer

The researcher has committed a Type II error, which is the failure to reject a false null hypothesis (in this case, the null hypothesis being that there is no difference between Democrats and Republicans in terms of their likelihood to protest). In other words, the researcher has incorrectly accepted the null hypothesis, leading to an incorrect conclusion that there is no difference between the groups.

A Researcher Studying Partisanship and the Likelihood of Being a Protester