A problem in the interpretation of a significant outcome in the test of the difference between two dependent means is particularly likely to occur when
A) population standard deviations are estimated from samples
B) sample size is large
C) a large value of t is obtained
D) members of a pair are not assigned at random to treatment conditions

Question

Quizplus · Accepted Answer

When members of a pair are not assigned at random to treatment conditions, it can lead to confounding variables affecting the results, making it difficult to interpret the significance of the outcome.

A Problem in the Interpretation of a Significant Outcome in the Test