The quality-control plan for a certain production process involves taking samples of size 4. The results from
Question:
a. Compute the 3Ï control limits for the R chart.
b. Compute the 3Ï control limits for the S chart.
c. Using the sample ranges, compute the 3Ï control limits for the chart.
d. Using the sample standard deviations, compute the 3Ï control limits for the chart.
Transcribed Image Text:
30 30 30 ΣΤ-712.5 Σ 143.7 Σ =62.5 1-1 2-1
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a The sample size is n 4 The upper and lower limits for the Rchart are D 3 a...View the full answer
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