If You Find That There Is a Logical Reason to Pair

Multiple Choice

If you find that there is a logical reason to pair the scores from the two groups in a two-group experiment, you know whether

A) the design is a paired-samples or an independent-samples design
B) to use hypothesis testing or confidence intervals
C) to use a one-tailed or two-tailed test
D) all of the descriptive alternatives are correct.