Consider the above past data from a production line (n=7). a) Draw X and R charts....

  

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Consider the above past data from a production line (n=7). a) Draw X and R charts. 20 b) Is the process under control? Is there any assignable cause?10 c) Estimate the population mean and population variance.15 d) Can we apply X and S charts for this problem? Compute S value for the first sample. (10) Consider the above past data from a production line (n=7). a) Draw X and R charts. 20 b) Is the process under control? Is there any assignable cause?10 c) Estimate the population mean and population variance.15 d) Can we apply X and S charts for this problem? Compute S value for the first sample. (10)

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a To draw XBar X and R charts we need to calculate the sample means X and ranges R for each sample T... View the full answer