ABSTRACT
This conclusion presents some closing thoughts on the concepts covered in the preceding chapters of this book. The book examines methods for estimating how capable a process is of meeting the specifications established for it. In all cases, primary interest has centered on estimating θ, the proportion of time that a product or service does not satisfy the specifications. Fitting a normal or nonnormal distribution to measurements made on each item and estimating the proportion of that distribution that is beyond the specification limits. The book builds the sample size problem in terms that should be easy to use in practice. By specifying either the precision of the estimated quality index or the power of a test against a specific alternative, the required sample size may be calculated.
