Suppose that a quality characteristic has a normal distribution with specification limits at USL = 100 and

Question:

Suppose that a quality characteristic has a normal with specification limits at USL = 100 and LSL = 90. A random sample of 30 parts results in x = 97 and s = 1.6.
(a) Calculate a point estimate of Cpk.
(b) Find a 95% confidence interval on Cpk.
Distribution
The word "distribution" has several meanings in the financial world, most of them pertaining to the payment of assets from a fund, account, or individual security to an investor or beneficiary. Retirement account distributions are among the most...