When you conduct a paired-samples t test, what is the null hypothesis?
A) The mean of the difference scores is 0 in the population.
B) One group scored significantly higher than the other.
C) The mean score is equal to the midpoint of the response scale.
D) People scored higher on the posttest than on the pretest.

Question

Quizplus · Accepted Answer

The null hypothesis for a paired-samples t test is that there is no significant difference between the mean of the difference scores and 0 in the population.

When You Conduct a Paired-Samples T Test, What Is the Null