The tests are about the populations from which the sample data were drawn, not about about the sample data itself.

p-values are a means to decide whether the null hypothesis (such as "in the population, the mean difference between

measurements is exactely = 0") can be rejected, based on the evidence gained from the sample data.

Maybe you should do some introductory reading about inferential statistics, tests of significance, and p-values .

With kind regards

Karabiner