(Steps Shown) 6.2. A company manufacturing oil seals wants to establish X̄ and R control charts on the process. There are 25 preliminary samples of size 5
Question: 6.2. A company manufacturing oil seals wants to establish \(\bar{X}\) and R control charts on the process. There are 25 preliminary samples of size 5 on the internal diameter of the seal. The summary data (in mm) are as follows:
\[\sum\limits_{i=1}^{25}{{{{\bar{X}}}_{i}}}=1,253.75,\,\,\,\,\sum\limits_{i=1}^{25}{{{R}_{i}}}=14.08\,\,\,\,\]- Find the control limits that should be used on the x and R control charts.
- Assume that the 25 preliminary samples plot in, control on both charts. Estimate the process mean and standard deviation.
Deliverable: Word Document 
(See Steps) 6.4. Discuss why it is important to establish control
![[See Solution] The data shown in Table](/images/solutions/MC-solution-library-76357.jpg "[See Solution] The data shown in Table 6E.2 are x and R values")
[See Solution] The data shown in Table 6E.2 are x and R values
![[Solution Library] A: 6.9. The data shown](/images/solutions/MC-solution-library-76358.jpg "[Solution Library] A: 6.9. The data shown in Table 6E4 are the")
[Solution Library] A: 6.9. The data shown in Table 6E4 are the
![[Solution] B : 6.14. Rework Exercise 6.9](/images/solutions/MC-solution-library-76359.jpg "[Solution] B : 6.14. Rework Exercise 6.9 using the s")
[Solution] B : 6.14. Rework Exercise 6.9 using the s
![[Steps Shown] This question has three parts.](/images/solutions/MC-solution-library-76360.jpg "[Steps Shown] This question has three parts. Consider a large")
[Steps Shown] This question has three parts. Consider a large
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