Which of the following statements are correct regarding the roles in Lean Six Sigma? (i) White Belts are professionals with basic awareness of Lean Six Sigma. (ii) Yellow Belts receive introductory training usually spanning 1-2 days. (iii) Green Belt professionals complete formal training to lead or support DMAIC projects. (iv) Master Black Belts mentor Green/Black Belts and manage high-level strategy rather than leading standard complex projects directly.

Which Six Sigma methodology is specifically used for improving an existing process or product?

Arrange the following phases of the Six Sigma DMAIC cycle in the correct sequential order of implementation: 1. Analyzing data to identify the root causes of identified issues. 2. Implementing control measures, developing standard operating procedures, and monitoring key metrics. 3. Proposing and implementing improvements, such as redesigning processes or introducing new technologies. 4. Collecting relevant data to quantify the current state of the process and establish a performance baseline.