Suppose That a Firm Has Historically Been Achieving "Three-Sigma" Quality

question 119

Multiple Choice

Suppose that a firm has historically been achieving "three-sigma" quality. If the firm later changes its quality management practices such that it begins to achieve "six-sigma" quality, which of the following phenomena will result?

• A) The average number of defects will be cut in half.
• B) The specification limits will be moved twice as far from the mean.
• C) The average number of defects will be cut by 99.9997%.
• D) The average number of defects will be cut by 99.87%.
• E) The average number of defects will be cut by 99.73%.

Understand the concept of continuous random variables and their probability measures.

Calculate probabilities involving the standard normal distribution (z-scores).

Identify and compute areas under the normal probability distribution.

Distinguish between true and false statements regarding characteristics of normal distributions.