A medical facility does MRIs for sports injuries. Occasionally, a test yields inconclusive results and must be repeated. Using the following sample data and n = 200. 1 Number of retests 1 Click here for the Excel Data File 22 32 61 52 40 SAMPLE 7 1 2 0 10 11 12 13 3 2 1 177 92 88 215 22 a. Determine the upper and lower control limits for the fraction of retests using two-sigma limits. Note: Do not round intermediate calculations. Round your final answers to 4 decimal places. Leave no cells blank - be certain to enter "O" wherever required. UCL LCL 0.0011 0 b. Is the process in control? O The process is in control. The process is not in control.

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A medical facility does MRIs for sports injuries. Occasionally, a test yields inconclusive results and must be
repeated. Using the following sample data and n = 200.
1
Number of retests
1
Click here for the Excel Data File
22
32
61
52
40
SAMPLE
7
1 2
0
10 11 12
13
3 2 1
177
92
88
215
22
a. Determine the upper and lower control limits for the fraction of retests using two-sigma limits.
Note: Do not round intermediate calculations. Round your final answers to 4 decimal places. Leave
no cells blank - be certain to enter "O" wherever required.
UCL
LCL
0.0011
0
b. Is the process in control?
O The process is in control.
The process is not in control.
Transcribed Image Text:A medical facility does MRIs for sports injuries. Occasionally, a test yields inconclusive results and must be repeated. Using the following sample data and n = 200. 1 Number of retests 1 Click here for the Excel Data File 22 32 61 52 40 SAMPLE 7 1 2 0 10 11 12 13 3 2 1 177 92 88 215 22 a. Determine the upper and lower control limits for the fraction of retests using two-sigma limits. Note: Do not round intermediate calculations. Round your final answers to 4 decimal places. Leave no cells blank - be certain to enter "O" wherever required. UCL LCL 0.0011 0 b. Is the process in control? O The process is in control. The process is not in control.
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