Std Deviation / Six Sigma
A pizza delivery company promises to deliver all customer orders within one hour of receiving an order at one of its stores. Actual data for all pizza delivered during the past week showed that the average delivery time was 45 minutes and standard deviation was 10 minutes.
(A) Is the company delivering Six Sigma quality to its customers?
(B) If not, then how much should the standard deviation of the process be reduced to get six sigma quality?
UTL "?o Mean or Mean "?o LTL
Std Dev Std Dev
A pizza delivery company promises to deliver all customer orders within one hour of receiving an order at one of its stores. Actual data for all pizza delivered during the past week showed that the average delivery time was 45 minutes and standard deviation was 10 minutes.
(A) Is the company delivering Six Sigma quality to its customers?
(B) If not, then how much should the standard deviation of the process be reduced to get six sigma quality?
UTL "?o Mean or Mean "?o LTL
Std Dev Std Dev
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