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(Step-by-Step) A company manufacturing oil seals wants to establish x̄ and R control charts for the process. There are 25 preliminary samples of size 5

Question:

A company manufacturing oil seals wants to establish \(\bar{x}\) and R control charts for the process. There are 25 preliminary samples of size 5 yielding data for the internal diameters of seals. The summary of the data is

\[\sum\limits_{i=1}^{25}{{{{\bar{x}}}_{i}}}=1235.75,\,\,\,\,\sum\limits_{i=1}^{25}{{{R}_{i}}}=14.08\]

You may express your answer to the following questions in terms of d2 and d3 functions.

  1. Find the control limits and center lines for the x and R charts.
  2. If the specifications for the process are nominal ±7 calculate the capability ratio of the process.

Price: $2.99
Solution: The downloadable solution consists of 2 pages
Deliverable: Word Document


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