HOM E. Anderson Homework-11 Name: __________________________________________________________________ PROCESS CONTROL During the month of May, the...

Looking at a different lab across town, the mean and standard deviation of individual flowtimes are 19.0 minutes and 4.5 minutes.  Their policy is that no flowtime should exceed 25 minutes, nor be less than 10 minutes.  What is their process capability in sigmas?

In reality, there is no lower specification limit set in lab waiting times. Lower is just better. How would you modify your calculation to accommodate for this? Does the quality level change?