Greetings, I've been watching some videos on this and it still doesn't make sense here's the excel file and the questions.

Link - https://drive.google.com/file/d/1n4Q42rlPIHKs3nixDPWX4q3QDVthWLgw/view?usp=sharing

I'm having trouble figuring out how to do the UCL and LCL and calculating the CP.. and more. I did some of them but if you could double-check things I'm so lost on this haha.

Here's how I was calculating the UCL -

X double bar 1003.3 R Bar = 12.45 D2= 2.059 Cp 1 Z(UCL) Z(LCL) Stdv = 6.046625 UCL =(G25)+(G32*3) LCL 985.1601