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(Solved) : Webster Chemical Company Lumps Caulking Compound Could Cause Difficulties Dispensing Smoot Q34243817

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Answer to At Webster Chemical Company, lumps in the caulking compound could cause difficulties in dispensing a smooth bead from th…

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At Webster Chemical Company, lumps in the caulking
compound could cause difficulties in dispensing a smooth
bead from the tube. Even when the process is in control, an
average of four lumps per tube of caulk will remain. Testing
for the presence of lumps destroys the product, so an analyst
takes random samples. The following results are obtained:
Tube No. Lumps Tube No. Lumps Tube No. Lumps
1 6 5 6 9 5
2 5 6 4 10 0
3 0 7 1 11 9
4 4 8 6 12 2

Determine the c-chart two-sigma upper and lower control
limits for this process. Is the process in statistical control?