At Webster Chemical Company, lumps in the caulking compound could cause difficulties in dispensing a smooth bead from the tube. Testing for the presence of lumps destroys the product, so an analyst takes random samples. The following results are obtained: Tube No.LumpsTube No.LumpsTube No.Lumps165690276510532751124488123 Determine the c-charttwo-sigmaupper and lower control limits for this process. Is the process in statistical control?TheUCLcequals------and theLCLcequals------(Enteryour responses rounded to two decimalplaces.)

Given data Number of tubes = 12 Sum of number of lumps = 6+7+2+4+6+5+5+8+0+5+2+3 = 53…

Answered: At Webster Chemical Company, lumps in…

Practical Management Science

6th Edition

ISBN:9781337406659

Author:WINSTON, Wayne L.

Publisher:WINSTON, Wayne L.

Chapter2: Introduction To Spreadsheet Modeling

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At Webster Chemical Company, lumps in the caulking compound could cause difficulties in dispensing a smooth bead from the tube. 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	0
2	7	6	5	10	5
3	2	7	5	11	2
4	4	8	8	12	3

Determine the c-chart

two-sigma

upper and lower control limits for this process. Is the process in statistical control?

The

UCLc

equals

------

and the

LCLc

equals

------

(Enter

your responses rounded to two decimal

places.)

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