+1 (218) 451-4151
glass
pen
clip
papers
heaphones

We need to maintain strict control over the variability of the thickness of the coating on the…

We need to maintain strict control over the variability of the thickness of the coating on the…

We need to maintain strict control over the variability of the thickness of the coating on the coated paper which we manufacture. Our criterion for the variability is that the variance of the thick- ness should not exceed 0.3 mm. You are requested to set up a quality control procedure for this situation with five percent significance level.