Probably a trivial questions, but I've been wrapping my head around it for a while...
I have a small sample (N=7) that performed a test in two conditions. No assumption can be made about the eventual normality of the population. I would like to test if the change in conditions significantly affected the results of the tests across subjects.
In this case a t-test on the means for the two conditions across subjects should not be applied. Am I right ?
Would a Mann U-test or Wilcoxon signed-rank test be more suitable ?
EDIT : (I am aware that these two test would compare the medians of the results)