Instead of Six Sigma your management has asked you to implem

Instead of Six Sigma, your management has asked you to implement a Four (actually 3.99) Sigma (may be the first organization to try this). How many defects can you expect per million opportunities?
A) 30 parts/million B) 60 parts/million. C) 50 parts/million. D) 71. E) 710.

Solution

Six Sigma is a term used to describe a measure of quality control that is higher than \"normal\". Six Sigma at many organizations simply means a measure of quality that strives for near perfection. Six Sigma is a disciplined, data-driven approach and methodology for eliminating defects (driving towards six standard deviations between the mean and the nearest specification limit) in any process -- from manufacturing to transactional and from product to service.
One to six sigma conversion table:

hence the answer is B)