> then XXXYYY is just dumb luck That's the idea. The null hypothesis is that this is dumb luck. Here's a piece of evidence that, if this is dumb luck, is not v

> then XXXYYY is just dumb luck That's the idea. The null hypothesis is that this is dumb luck. Here's a piece of evidence that, if this is dumb luck, is not very likely. Ergo, the odds this is just dumb luck is low and there may be a real effect here. As the OP said, it's not meant to be used in a scientific paper, it's to let you see if you might be on the right track.