What are the alternative hypotheses stated by the authors (t…

What are the alternative hypotheses stated by the authors (these may be in a different section of the paper)? For each, provide a suitable null hypothesis in each case? Which results do the authors consider to be most important? Describe these and also state why you thought that these were the ones the authors believed to be most important? [Remember to click the html button (bottom left) to correctly format your answer]