Question

A pizza delivery company promises to deliver all customer orders within one hour of receipt of the order. Actual data collected over the past week showed that the average delivery time was 45 minutes with a standard deviation of 10 minutes.A) Is the company delivering a Six Sigma level of quality to its customers?B) If not, then how much should the standard deviation of the process be reduced to in order to achieve Six Sigma quality.

Answer 1

Answer:

(A) No

(B) 0.045 minutes standard deviation

Explanation:

Note that the six sigma quality principle is a no waste or variance principle, therefore it expected that 99.99966% of all production opportunities are free of defects. The five basic stages of six sigma are;

1. Define,
2. Measure,
3. Analyze,
4. Improve,
5. and Control.

To achieve six sigma quality the standard deviation should be reduced from 10 minutes to 0.045 minutes or 2.7 seconds.