i need help with this question for my operation management class

Project Description:

need help asap

what is the value of x ?
what is the value of r?
what are the uclx and lclx, using 3s? plot the data.
what are the uclr and lclr, using 3s? plot the data.
if the true diameter mean should be 155 mm and you want this as your center ( nominal) line, what are the new uclx andlclx?
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