Suppose that there are now four photolithography processes to compare (A, B, C, and D). Using 15 wafers, the measurements are as follows (in µm):
![1728_f8c3b842-4161-4a87-8d9b-1ee687e76c66.png](https://secure.tutorsglobe.com/CMSImages/1728_f8c3b842-4161-4a87-8d9b-1ee687e76c66.png)
Calculate the full ANOVA table and find the level of significance for rejecting the hypothesis of equality. Explain any assumptions and perform the necessary diagnostics on the residuals.