Problem 3 3.1 X-Bar Chart UCLX x x x X-bar x x LCLX a. Does the above process seem to be normal or out-of-control? b. Why? c. If the process is out of control, what may have caused an out-of-control situation? 3.2 Range Chart UCLR X X R x x X X x x X X LCLR a. Does the above process seem to be normal or out-of-control? b. Why? c. If the process is out of control, what may have caused an out-of-control situation? 3.3 Range Chart UCLX x x x x X X-bar LCLX 1 a. Does the above process seem to be normal or out-of-control? b. Why? c. If the process is out of control, what may have caused an out-of-control situation