suppose that a quality characteristic has a normal distribution with specification limits at USL=100 and LSL=90. A random sample of 30 parts results in x-bar=97 and s=1.6
suppose that a quality characteristic has a normal distribution with specification limits at USL=100 and LSL=90. A random sample of 30 parts results in x-bar=97 and s=1.6 A. Calculate a point estimate of Cpk, the ^ ^ Cpu and Cpl B. Find a 95% confidence interval on Cpk. EXPERT ANSWER