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SCENARIO 15-7
a Supplier of Silicone Sheets for Producers of Computer

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SCENARIO 15-7
A supplier of silicone sheets for producers of computer chips wants to evaluate her manufacturing process.She takes samples of size 5 from each day's output and counts the number of blemishes on each silicone sheet.The results from 20 days of such evaluations are presented below. sheet Day 12345 Mean Range 181014658.69281366108.67310127799.05459127108.6758389107.676979698.03710105767.65810910658.0596106998.0410698687.431185610107.85126477127.2813757696.8414588766.8315712106109.06167114787.4717845475.64181141111109.4719610610108.442061212688.86\begin{array}{rrrrrrrr}&&&\text{sheet}\\\text { Day }&1&2&3&4&5&\text { Mean}&\text { Range }\\\hline 1 & 8 & 10 & 14 & 6 & 5 & 8.6 & 9 \\2 & 8 & 13 & 6 & 6 & 10 & 8.6 & 7 \\3 & 10 & 12 & 7 & 7 & 9 & 9.0 & 5 \\4 & 5 & 9 & 12 & 7 & 10 & 8.6 & 7 \\5 & 8 & 3 & 8 & 9 & 10 & 7.6 & 7 \\6 & 9 & 7 & 9 & 6 & 9 & 8.0 & 3 \\7 & 10 & 10 & 5 & 7 & 6 & 7.6 & 5 \\8 & 10 & 9 & 10 & 6 & 5 & 8.0 & 5 \\9 & 6 & 10 & 6 & 9 & 9 & 8.0 & 4 \\10 & 6 & 9 & 8 & 6 & 8 & 7.4 & 3 \\11 & 8 & 5 & 6 & 10 & 10 & 7.8 & 5 \\12 & 6 & 4 & 7 & 7 & 12 & 7.2 & 8 \\13 & 7 & 5 & 7 & 6 & 9 & 6.8 & 4 \\14 & 5 & 8 & 8 & 7 & 6 & 6.8 & 3 \\15 & 7 & 12 & 10 & 6 & 10 & 9.0 & 6 \\16 & 7 & 11 & 4 & 7 & 8 & 7.4 & 7 \\17 & 8 & 4 & 5 & 4 & 7 & 5.6 & 4 \\18 & 11 & 4 & 11 & 11 & 10 & 9.4 & 7 \\19 & 6 & 10 & 6 & 10 & 10 & 8.4 & 4 \\20 & 6 & 12 & 12 & 6 & 8 & 8.8 & 6\end{array} She also decides that the upper specification limit is 10 blemishes.
-Referring to SCENARIO 15-7, an X chart is to be used for the number of blemishes.The lower control limit for this data set is , while the upper control limit is .  SCENARIO 15-7 A supplier of silicone sheets for producers of computer chips wants to evaluate her manufacturing process.She takes samples of size 5 from each day's output and counts the number of blemishes on each silicone sheet.The results from 20 days of such evaluations are presented below.  \begin{array}{rrrrrrrr} &&&\text{sheet}\\ \text { Day }&1&2&3&4&5&\text { Mean}&\text {  Range }\\ \hline 1 & 8 & 10 & 14 & 6 & 5 & 8.6 & 9 \\ 2 & 8 & 13 & 6 & 6 & 10 & 8.6 & 7 \\ 3 & 10 & 12 & 7 & 7 & 9 & 9.0 & 5 \\ 4 & 5 & 9 & 12 & 7 & 10 & 8.6 & 7 \\ 5 & 8 & 3 & 8 & 9 & 10 & 7.6 & 7 \\ 6 & 9 & 7 & 9 & 6 & 9 & 8.0 & 3 \\ 7 & 10 & 10 & 5 & 7 & 6 & 7.6 & 5 \\ 8 & 10 & 9 & 10 & 6 & 5 & 8.0 & 5 \\ 9 & 6 & 10 & 6 & 9 & 9 & 8.0 & 4 \\ 10 & 6 & 9 & 8 & 6 & 8 & 7.4 & 3 \\ 11 & 8 & 5 & 6 & 10 & 10 & 7.8 & 5 \\ 12 & 6 & 4 & 7 & 7 & 12 & 7.2 & 8 \\ 13 & 7 & 5 & 7 & 6 & 9 & 6.8 & 4 \\ 14 & 5 & 8 & 8 & 7 & 6 & 6.8 & 3 \\ 15 & 7 & 12 & 10 & 6 & 10 & 9.0 & 6 \\ 16 & 7 & 11 & 4 & 7 & 8 & 7.4 & 7 \\ 17 & 8 & 4 & 5 & 4 & 7 & 5.6 & 4 \\ 18 & 11 & 4 & 11 & 11 & 10 & 9.4 & 7 \\ 19 & 6 & 10 & 6 & 10 & 10 & 8.4 & 4 \\ 20 & 6 & 12 & 12 & 6 & 8 & 8.8 & 6 \end{array}  She also decides that the upper specification limit is 10 blemishes. -Referring to SCENARIO 15-7, an X chart is to be used for the number of blemishes.The lower control limit for this data set is , while the upper control limit is .


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