table @6.1

Sample Size, n	Mean Factor, A2	Upper Range, D4	Lower Range, D3
2	1.880	3.268	0
3	1.023	2.574	0
4	0.729	2.282	0
5	0.577	2.115	0
6	0.483	2.004	0
7	0.419	1.924	0.076
8	0.373	1.864	0.136
9	0.337	1.816	0.184
10	0.308	1.777	0.223
12	0.266	1.716	0.284

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	x	R	hour	x	R	hour	X	R	hour	x	R
1	3.35	0.65	7	3.15	0.53	13	3.21	0.80	19	3.31	1.56
2	3.20	1.18	8	2.55	1.13	14	2.73	1.36	20	2.89	1.04
3	3.32	1.43	9	2.92	0.71	15	3.22	1.06	21	2.55	1.13
4	3.29	1.26	10	2.95	1.28	16	2.74	0.50	22	3.18	0.41
5	2.97	1.17	11	2.93	1.17	17	2.86	1.48	23	3.04	1.63
6	2.86	0.35	12	2.87	0.35	18	2.74	1.29	24	2.64	0.92

Based on the sampling done,the control limits for 3-sigma x overbar

chart are (roundall intermediate calculations to three decimal places before proceeding with further

calculations):

Upper Control Limit (UCL Subscript x overbar)= ______inches (roundyour response to three decimalplaces).

Lower Control Limit (LCL Subscript x overbar)=________inches (roundyour response to three decimalplaces).

The control limits for the 3-sigmaR-chartare (roundall intermediate calculations to three decimal places before proceeding with further

calculations):

Upper Control Limit (UCL Subscript Upper R)= ______inches (roundyour response to three decimalplaces).

Lower Control Limit (LCL Subscript Upper R)=_____inches (roundyour response to three decimalplaces).

.