For a Repeated Measures T Test, the Null Hypothesis Attributes

Multiple Choice

For a repeated measures t test, the null hypothesis attributes

A) mean differences between pre- and post-test scores to random sampling error.
B) any differences between the means for group 1 and group 2 to random sampling error.
C) mean differences between pre- and post-test scores to the effects of an independent variable.
D) any differences between the means for group 1 and group 2 to the effects of an independent variable.