Define the concept of $p-$ value in one or two sentences.
P value is the probability of getting the observed or more extreme values when the null hypothesis is true. A small p value is the strong evidence against the null hypothesis , and we reject the null hypothesis. In other words p value is the probability of getting the difference between expected and observed more than calculated when the null hypothesis is true.
I would want you to check out whether or not I'm wrong.
Wishing my kindest regards!
You have the gist of it and there is nothing wrong although the wording could be improved some. Instead of saying "a small p value is strong evidence" say a p value less than the chosen level of significance is reason to reject the null hypothesis and is strong evidence etc..The last sentence is a little awkwardly stated. How about.......
In other words the p value is the probability of getting the observed value based on an expected value from a true null hypothesis.