Hi, Maybe i'm using the wrong type of test..but I would like to generate a sample size to compare two parts. The test is an attribute test and I just want to verify the new part doesn't increase the failures by more than 10%. This seemed like a non inferiority test when I first thought about it but playing around with the calculator, it seems like it's more of a test for variable data. Am I just thinking about the wrong test or is there a way to adapt the calculator for attribute data? Thanks