1. A process that is in statistical control is a process that _____

(a) insures high productivity

(b) has variation in statistical control

(c) meets a customers quality speculations

(d) has zero natural variation

2. A C_p value of ______ occurs when the natural process variation equals the customers tolerance range.

(a) 1.0

(b) 1.5

(c) 2.0

(d) 0.5

3.

The sample values in the table below represent service times in minutes. The second table provides constants for control chart calculations.

Sample	Observation Number
Number	1	2	3	4
1	10.1	10.6	9.8	9.9
2	9.7	9.5	10.3	10.5
3	10.1	10.7	9.2	10
4	9.9	9.8	10.4	10.1
5	10.4	10.1	10.9	9.9

Sample Size (n)	Factor for X-bar (A2)	Factor for LCL for R (D3)	Factor for UCL for R (D4)
2	1.880	0	3.267
3	1.023	0	2.574
4	0.729	0	2.282
5	0.577	0	2.114
6	0.483	0	2.004
7	0.419	0.076	1.924
8	0.373	0.136	1.864
9	0.337	0.184	1.816

For the R-chart, what is the value of LCL ?

(rounded to two decimals)

0.71

2.24

0.00

0.57