Graphically Summary Hypothesis is a predication about a population. Hypothesis is stated as Null and Alternative Statistical significance means that there is a low probability that your observed results come from populations that are equal or that made an error when you rejected the null. The goal of the test is to reject the Null Hypothesis State your hypothesis. If your test statistic is more than the than your critical value, reject the null. If your test value falls in the rejection region, then accept the research hypothesis.
Rejection region is the alpha level.
The probability that we made a mistake is very small.