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Submitted by Clay1203 on Sun, 2012-05-06 01:35
due on Thu, 2012-05-10 01:33
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Evaluate 5.2 Problem 17

Management at Webster, in Problem 16, is now concerned as to whether caulking tubes are being properly capped. If a significant proportion of the tubes are not being sealed, Webster is placing its customers in a messy situation. Tubes are packaged in large boxes of 144. Several boxes are inspected, and the following numbers of leaking tubes are found (see attached table).

Calculate p-chart three sigma control limits to assess whether the capping process is in statistical control.

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Submitted by shahimermaid on Sun, 2012-05-06 02:56
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Sheet1

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 xxxxxx xxxxx 1 x x 5 x 3 x x p= xxxxxxx 0.5 5 2 6 x x x 8 x 9 4 xx 9 11 2 xx x xx 5 xx x UCL= 0.5 x 3 xxxx (0.5 X 0.5)/144= 0.5 +0.042= xxxxx xx x xx x xxxx 0.5-0.042 x 0.458 xx x 18 x 19 2 xx x Total 72