Sampling 4 pieces of precision-cut wire (to be used in computer assembly) every hour for the past 24 hours has produced the following? results:

Hour   Xbar   R   Hour   Xbar   R   Hour   Xbar   R   Hour   Xbar   R
1   3.15   0.76   7   3.15   0.53   13   3.21   0.80   19   3.31   1.66
2   3.10   1.13   8   2.65   1.08   14   2.83   1.31   20   2.99   1.14
3   3.12   1.48   9   2.92   0.76   15   3.12   1.01   21   2.65   1.03
4   3.49   1.31   10   2.85   1.28   16   2.74   0.55   22   3.28   0.41
5   3.17   1.22   11   2.93   1.17   17   2.86   1.43   23   2.94   1.63
6   2.86   0.37   12   3.07   0.35   18   2.84   1.34   24   2.54   0.92

Based on the sampling done, the control limits for 3-sigma x overbarx chart are (round all intermediate calculations to three decimal places before proceeding with further ?calculations)?:

Upper Control Limit (UCL Subscript x overbarUCLx?) ?= ?

Lower Control Limit (LCL Subscript x overbarLCLx?) ?= ?

Based on the x overbarx-chart, the wire cutting process has been

IN CONTROL or OUT OF CONTROL?

The control limits for the 3-sigma R-chart are (round all intermediate calculations to three decimal places before proceeding with further calculations)?:

Upper Control Limit (UCL Subscript Upper RUCLR?) = ?

Lower Control Limit(LCL Subscript Upper RLCLR?) = ?

Based on the R-chart, the wire cutting process has been

IN CONTROL or OUT OF CONTROL