grade([67, 96, 61, 63, 84, 79, 72, 84],[2.0, 0.25, 1.0, 1.5, 0.75, 1.5, 0.75, 1.75]) = C (normsum is 73.26315789473684)
grade([96, 91, 98, 89, 59, 96],[0.75, 0.25, 0.75, 1.5, 0.75, 0.25]) = B (normsum is 87.05882352941177)   
grade([50, 99, 43, 58, 66, 50],[1.5, 1.5, 1.5, 1.25, 1.25, 0.75]) = D (normsum is 62.0)
grade([33, 54, 71, 39, 63, 79, 91, 65, 72, 84, 87, 44],[2.5, 2.0, 2.25, 2.75, 2.0, 1.0, 0.75, 0.75, 2.0, 1.0, 1.25, 1.75]) = D (normsum is 59.6625)
grade([100, 97, 95, 91, 100, 81, 88, 95, 99, 98, 92, 81],[1.0, 1.0, 1.75, 2.25, 0.75, 1.5, 1.75, 0.5, 2.5, 3.0, 1.25, 1.5]) = A (normsum is 93.01333333333334)