You could just open the Wikipedia, you know: https://en.wikipedia.org/wiki/Null_hypothesis https://en.wikipedia.org/wiki/Null_hypothesis the term "null hypothe

You could just open the Wikipedia, you know: https://en.wikipedia.org/wiki/Null_hypothesis https://en.wikipedia.org/wiki/Null_hypothesis the term "null hypothesis" usually refers to a general statement or default position that there is no relationship between two measured phenomena, or no difference among groups Rejecting or disproving the null hypothesis — and thus concluding that there are grounds for believing that there is a relationship between two phenomena — is a central task in the modern practice of science, and gives a precise criterion for rejecting a hypothesis.