what is the concept of the pvalueSolutionpvalue is the proba

what is the concept of the p-value?

Solution

p-value is the probability of getting test statistic as extreme as you get when null hypothesis is actually true. If p-value is large, this means you can get that test statistic most often when null hypothesis is true and we can conclude that the null hypothesis is true. If p-value is small, this means you can get that test statistic rarely when null hypothesis is true and we can conclude that the null hypothesis may not be true.