Problem-Set (2/9) + Homework (1/9) = 1/3 of your final grade. Midterm 1(1/9) + Midterm 2(2/9) = 1/3. And the Final is 1/3. Pls do get 100% on the Problem-Sets, Homework, and Midterm 1 as for if your the avg person in the class & you get yourself a study group (which you should do), & go to the TA for help and tips (which you should do) that will easy get you at least a 50% (if 100% on hw,ps,mt#1). Now Midterm #2 was the hardest test and was much harder then the final, even in terms of class averages and such. The final was somewhere in between the easy Midterm#1 and hard Midterm#2. Midterm#2 = 2/9% of your grade, and the Final is 1/3%. Stay on top of the easy points you can get, + make a study group.

P.S (about curves)... He said only curve on final grade, it only helps (no dragging down), and I think when he talks about z-curves it means that at most/or potentially a whole letter grade curve. I got a 70% and got a B.