I am having trouble determining which test to run for statistical analysis.
I have 10 subjects that took a test before and after intervention A and 10 subjects that took a test before and after intervention B. I want to compare the effect between intervention A and B.
I was thinking of having the Delta Scores from intervention A vs the delta scores for intervention B. Is there a special test for a scenario like this? Should I use a non-parametric test due to small sample sizes?
Thank you in advance.