Question: ( a ) The specification limits are 4 9 + / - 4 . Assume that the data is normally distributed! Estimate process capability ratio

(a) The specification limits are 49+/-4. Assume that the data is normally distributed! Estimate
process capability ratios (Cp, Cpk, Pp, Ppk). Is the process capable?
(b) If the specification limits were 51+/-3. Re-calculate process capability ratios (Cp, Cpk, Pp,
Ppk). Is the process still capable?
(c) Comment on the difference between Cp and Cpk ratios.

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