1. Calculate the DPU for a 4-step process based on the following: IPY1 = 96% IPY2 = 98% IPY3 = 99% IPY4 = 97% 2. A process has 3 steps with the following IPY's: 95%, 98 % and 96 %. Determine the DPMO for the entire process 3. A process has 3 steps with the following IPY's: 95%, 98 % and 96 %. Determine the Sigma Level for the entire process 4. If the DPMO for a process is 78333 determine the Sigma Level 5. For the following invoice error problem determine the DPU: 250 documents 5 opportunities for errors per document 25 defects 6. For the following invoice error problem determine the DPMO: 250 documents 5 opportunities for errors per document 30 defects