QUESTION 3 (20 Marks) Six Sigma refers to the plus or minus three sigma from the mean of the data under the curve. In the case of a normal distribution, 68.26% of the data points are within plus or minus one sigma from the mean, 95.46% are within two sigma and 99.73% are within three sigma. A process variation exceeding 3 sigma should be improved. With a Six Sigma capable process, only a very small number of possible failures could fall outside specification limits (Quality One, 2019). With reference to the statement above, critically discuss the six sigma sub-methodologies and how these can be implemented in any project of your choice.