Sample Size comparison

#4
I tried using the formulas you suggested and I have a feeling I did not clearly describe what I am trying to accomplish. Two independent groups tested their own sample size (based on their group's sampling rules) of the same data for process failures. Group 1 has substantially larger sample size than Group 2; almost 20 times in size. Both groups then calculate the defect rate (findings/sample size) of the found failures; both defect rates because of the sample sizes are different and I need to find a way to show if the defect rates would be the same if the sample sizes were the same
 

Miner

TS Contributor
#5
The difference in sample size will affect the width of the confidence interval around each estimate, but should not affect the estimate itself. The methods that I referenced take the different sample sizes into consideration.