1. Kuwait Chemical Company produces mastics and caulking for the construction industry. The product is blended in large mixers and then pumped into tubes and capped. The company is concerned whether the filling process for tubes of caulking is in statistical control. The process should be centered on 8 grams per tube. Several samples of eight tubes are taken and each tube is weighed in grams. a. Assuming that taking only 6 samples is sufficient, is the process in statistical control? b. Consider dropping sample 6 because of an inoperative scale, causing inaccurate measures. What is the conclusion on process variability and process average