If a researcher concludes that a null hypothesis is false when it is actually true, he or she has committed a ______ error.
A) standard
B) Type I
C) Type II
D) Type III

Question

Quizplus · Accepted Answer

This is a classic definition of a Type I error, where the researcher incorrectly rejects a true null hypothesis. Type II error, on the other hand, occurs when the researcher fails to reject a false null hypothesis. Standard and Type III errors are not commonly used or recognized in statistical hypothesis testing.

If a Researcher Concludes That a Null Hypothesis Is False