What would be the null hypothesis and alternative hypothesis?

Original statement: Use a 0.01 significance level to test the claim the old ratings are higher than the new ratings. This problem is based on ratings of movies. If that's the original claim, what would the null hypothesis and alternative hypothesis be? Also, would this one a one tail or two tail test?|||Null hypothesis: old ratings = new ratings


or (old ratings) - (new ratings) = 0





Alternative Hypothesis:


old ratings %26gt; new ratings


(old ratings) - (new ratings) %26gt; 0


Right tail





OR





new ratings %26lt; old ratings


(new ratings) - (old ratings) %26lt; 0


left tail|||Null: ratings systems are similar


Alt: old ratings are higher than old rating





1-tail, since testing one direction, greater than.