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For the data shown below, prepare a x-bar chart. Note that the sample size is three. Record the values for the UCL, center line, and LCL. In addition, note any points that are out of control.
Sample
Mean
Range
1
10.51
2.34
6
8.59
2.24
2
10.83
7.80
7
10.32
2.12
3
11.32
2.47
8
9.01
3.44
4
9.15
2.86
9
12.01
0.05
5
9.44
3.77
10
8.44
1.55
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Standard deviations for first- and second-time and confidence interval
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