The defect rate for a product has historically been about 2%. What are the upper and lower control chart limits if you wish to use a sample size of 100 and 3 sigma limits?
A) Upper control limit: 8%; Lower control limit: -4%
B) Upper control limit: 6%; Lower control limit: -2%
C) Upper control limit: 2%; Lower control limit: -2%
D) Upper control limit: 8%; Lower control limit: -2%
