b. Analysts obtain the following sample means after a recent inspection of the production process. Can they conclude that the process is under control? x⎯⎯1=13.7 , x⎯⎯2=14.2 , x⎯⎯3=13.9 , x⎯⎯4=14.1 , x⎯⎯5=14.3 , x⎯⎯6=13.9