b. Determine X and R. (Round your answers to 3 decimal places.) X bar R bar c. Determine the UCL and LCL for a X chart. (Round your answers to 3 decimal places.) UCL LCL d. Determine the UCL and LCL for R-chart. (Leave no cells blank - be certain to enter "O" wherever required. Round your answers to 3 decimal places.) UCL LCL

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Resistors for electronic circuits are manufactured on a high-speed automated machine. The machine is set up to produce a large run of resistors of 1,000 ohms each. 

To set up the machine and to create a control chart to be used throughout the run, 15 samples were taken with four resistors in each sample. The complete list of samples and their measured values are as follows: Use three-sigma control limits.

b. Determine X and R. (Round your answers to 3 decimal places.)
X bar
R bar
c. Determine the UCL and LCL for a X chart. (Round your answers to 3 decimal places.)
UCL
LCL
d. Determine the UCL and LCL for R-chart. (Leave no cells blank - be certain to enter "O" wherever required. Round your answers to
3 decimal places.)
UCL
LCL
e. What comments can you make about the process?
O Process is out of statistical control
O Process is in statistical control
Transcribed Image Text:b. Determine X and R. (Round your answers to 3 decimal places.) X bar R bar c. Determine the UCL and LCL for a X chart. (Round your answers to 3 decimal places.) UCL LCL d. Determine the UCL and LCL for R-chart. (Leave no cells blank - be certain to enter "O" wherever required. Round your answers to 3 decimal places.) UCL LCL e. What comments can you make about the process? O Process is out of statistical control O Process is in statistical control
a. Calculate the mean and range for the above samples. (Round "Mean" to 2 decimal places and "Range" to the nearest whole
number.)
Sample Number
Mean
Range
987.00
32
2
1,009.75
50
1,008.75
1,005.25
3
56
4
21
5
1,001.75
48
6.
1,013.25
24
7
995.00
26
1,002.75
1,009.00
995.00
8
56
9
37
10
29
11
983.00
11
12
987.75
52
13
1,003.25
40
14
1,020.50
20
15
981.50
31:
Transcribed Image Text:a. Calculate the mean and range for the above samples. (Round "Mean" to 2 decimal places and "Range" to the nearest whole number.) Sample Number Mean Range 987.00 32 2 1,009.75 50 1,008.75 1,005.25 3 56 4 21 5 1,001.75 48 6. 1,013.25 24 7 995.00 26 1,002.75 1,009.00 995.00 8 56 9 37 10 29 11 983.00 11 12 987.75 52 13 1,003.25 40 14 1,020.50 20 15 981.50 31:
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