You are responsible for manufacturing the hinges used on the doors of Airbus A330 airplane. Since a close fit is required to ensure the doors stay airtight, statistical quality control is used to ensure the consistent high quality of the hinges. The data from the five samples (k) of yesterdays' 4 observations (n) are shown below. (n=4) N 4 Sample 1 55 53 40 50 Sample 2 39 51 50 54 Sample 3 50 51 50 48 Sample 4 47 49 46 51 Sample 5 49 53 48 50 What is the UCLr? (Use Appendix B in your text to find the D4 value - where n=4.) between 0 - 10 between 11 -20 between 21 - 30 O Greater than 30