# Question

A normally distributed quality characteristic has specification limits at LSL = 50 and USL = 60. A random sample of size 35 results in x 55.5 and s 0.9.

(a) Calculate a point estimate of Cpk.

(b) Find a 95% confidence interval on Cpk.

(c) Is this a 6-sigma process?

(a) Calculate a point estimate of Cpk.

(b) Find a 95% confidence interval on Cpk.

(c) Is this a 6-sigma process?

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