Problem 4. Specifications on a cigar lighter detent are 0.3220 and 0.3200 in. Samples of size 5 are taken every 45 min with the results shown in Table 6E.17 (measured as deviations from 0.3210 in 0.0001 in.). A) Establish x and R charts with appropriate trial control limits. Revise these trial limits as necessary to produce a set of control charts for monitoring future production. B) Estimate the standard deviation of the process. C) What is the process capability? Subgoup X1 X2 X3 X4 X5 no. 1 9 4 3 0 3 2 0 9 0 3 2 3 1 1 0 2 1 2/2 4 -3 0 -1 0 -4 5 -7 2 0 0 2 6 -3 -1 -1 0 -2 1 9 4 3 3 0 9 2 WIN 0 3 2 0 0 1 1 1 4 -3 0 -1 0 -4 -7 2 0 0 2 6 -3 -1 -1 0 -2 7 0 -2 -3 -3 -2 8 oo 2 0 -1 -3 -1 9 0 2 -1 -1 2 10 -3 -2 -1 -1 2 11 -16 2 -4 -1 12 -6 -3 | oo -8 0 0 13 -3 -5 5 14 -1 -1 -1 -2 -1 15 1 1 9 6 9 6