1. Six Sigma is defined as:a) A methodology for cost reduction and a statistical concept for employee satisfaction.b) A methodology for process improvement and a statistical concept that seeks to define the variation inherent in any process.c) A project management technique and a software for data analysis.d) A quality control system focused only on manufacturing and a set of leadership principles. 2. A "perfect" process in Six Sigma is statistically represented by 3.4 defects per million opportunities, which is equivalent to:a)99.999% defect-free.b)99.99966% defect-free.c)99.9% defect-free.d)99.0% defect-free. 3. Which of the following is a common myth about Six Sigma?a) Six Sigma is customer-focused.b) Six Sigma can be applied to any problem of process but is not always relevant to problems of culture or people.c) Six Sigma always requires expensive software and external consultants.d) Six Sigma focuses on continuous improvement.