In Statistics - How to find Upper-Lower Control Limits -Mean/std deviation?
The question I've been working on for the past few hours, and completely stumped on is:
'The upper and lower control limits of a process are 66 and 54. Samples of size 16 are used for the inspection process. Determine the mean as well as the standard deviation for this process.'
Does anyone know how to do this?? I'm so confused....
Any help would be greatly appreciated!