Question: A production process for the JMF Semicon is monitored using x-bar and R charts. 10 samples of n-15 observations have been gathered with the

A production process for the JMF Semicon is monitored using x-bar and

A production process for the JMF Semicon is monitored using x-bar and R charts. 10 samples of n-15 observations have been gathered with the following results: Sample Mean Range 251 29 2. 258 45 233 36 4. 275 25 234 35 9. 289 20 7. 256 3 265 19 9. 246 14 10 323. 46 Caiculate the center line (CL), upper control limit (UCL), and lower control limit (LCL) for x-bar and R charts, and then draw the conclusion about whether the process is in control or not.

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