Joshua Zermeno
MGMT 3830.012
Homework Week 9
The time to replace the vehicle wiper blades at a service center was monitored usinf a mean and a range
chart. Six samples of n=20 observations were obtained and the sample means and ranges computed:
Sample Mean Range Sample Mean Range
1 3.06 .42 4 3.13 .46
2 3.15 .50 5 3.06 .46
3 3.11 .41 6 3.09 .45
Using the factors in the above table determine upper and lower control limits for mean and range
charts. Is the process in control?
UCL Mean 3.181
LCL Mean 3.019
UCL Range 0.7155
LCL Range 0.1845
Yes, the process is in control.
And
Answer the following critical thinking exercise with at least a 150 minimum word count.
As a manager, how would you deal with the possibility that customer satisfaction does not always lead