# Question: The data shown in Table 6E 2 are x and R

The data shown in Table 6E.2 are x and R values for 24 samples of size n = 5 taken from a process producing bearings. The measurements are made on the inside diameter of the bearing, with only the last three decimals recorded (i.e., 34.5 should be 0.50345).

(a) Set up x and R charts on this process. Does the process seem to be in statistical control? If necessary, revise the trial control limits.

(b) pˆ Pr{x LSL} Pr{x USL} Pr{x 20} Pr{x 40} Pr{x 20} 1Pr{x 40}

(a) Set up x and R charts on this process. Does the process seem to be in statistical control? If necessary, revise the trial control limits.

(b) pˆ Pr{x LSL} Pr{x USL} Pr{x 20} Pr{x 40} Pr{x 20} 1Pr{x 40}

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