A newspaper reported that researchers were surprised when a new study found no relationship between a certain food and a certain disease, because two previous studies had found a relationship. Which of the following is not likely to explain what happened?
A) The new study had lower power than the other studies, and thus failed to detect a real relationship.
B) The two prior studies each made a Type 2 error.
C) The two prior studies each made a Type 1 error.
D) The new study made a Type 2 error.

Question

Quizplus · Accepted Answer

A Type 2 error occurs when a study fails to detect a relationship that actually exists. If both prior studies made a Type 2 error, they would not have found a relationship when there was one, contradicting the scenario where they did find a relationship.

A Newspaper Reported That Researchers Were Surprised When a New