The Ki Squared Test - The Null Hypothesis

The null hypothesis is the base line of what is expected if nothing funny is going on. The output of these statistical tests is a probability, the chance that the result differs from the null hypothesis to a real efect. If i role a two, does it change the chances of what i roll next? And in this case, i did serve ant effect. So my intuition, and looking at the grafts i put together, told me that this was unlikely to just be a random occurrence.