The hypothesis is the statement you are trying to prove or disprove in your assignment.
The aim of the assignment would usually be to prove or disprove your hypothesis, so having that as a separate section does seem a bit confusing. First, I'd check to see if the assignment has a goal beyond testing the hypothesis. For instance, is the reason you have been given the assignment to make you review the literature on a certain topic? If the assignment has a specific purpose independent of the hypothesis you chose, then you should probably write about that. Otherwise, I'd say that this section is where you would give your reasons for wanting to test the hypothesis. So, if your hypothesis is "green grass will turn blue when exposed to certain types of sulfates," why do you care? Why should anybody else? How is this going to advance your field of study in a meaningful way?
Sean, EssayForum.com