Question: Sample Hour 1 2 3 5 5 R 1 23 22 21 22 22 2 17 19 42 18 8 3 12 7 9 7

Sample Hour 1 2 3 5 5 R 1 23 22 21 22 22 2 17 19

Sample Hour 1 2 3 5 5 R 1 23 22 21 22 22 2 17 19 42 18 8 3 12 7 9 7 11 4 27 42 22 22 23 5 21 20 36 18 6 31 34 12 26 36 a) Determine the upper and lower X and R control chart limits. b) Do the data indicate a process that is in control? Why? UCLR= DAR UCL, = + A,R LCLR = D3 R LCL, = 2 - AR

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