**Keep getting wrong answer. Problem I am trying to solve: In each of 10 consecutive weeks,...
**Keep getting wrong answer. Problem I am trying to solve:
In each of 10 consecutive weeks, quality control inspectors sampled 88 automobile tires produced by a certain machine (880 tires in all) looking for ones that were deficient in some way. The numbers of deficient tires found in the 10 samples were:
5, 7, 6, 13, 11, 15, 7, 6, 7, 9.
For the control chart for the proportion of deficient tires produced by this machine during the 10 weeks, find the following:
(a) The center line: p¯= 0.0977
(b) The upper control limit: UCL = 0.1926
(c) The lower control limit: LCL=______________
**For LCL I keep getting it wrong. I have tried 0.0027, 0.0028, 0.002748, 0.00275, 0.0027483143, 0.002786, 0.0029, 0.002738, 0.0026, 0, 1, 0.00284,.........
I have tried to figure out LCL for a while and I do not know what the answer is. I JUST NEED HELP SOLVING LCL
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**Keep getting wrong answer. Problem I am trying to solve:
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