Hi All I am having trouble with a sample size selection. I would like to run a study on the following applications to a program and record how many passed/failed. I have no control group. the numbers are as follows.

N=364

_______(year1) (year2)

(Group1) 124______30

(Group2) 200______10

I would like a confidence level of 95%. I am unsure as to which equation to use and how I should go about selecting a sample from each group/year in order to review applications to calculate an error rate. If there is anyone out there that could walk me through the steps to calculating how many applications I should pull from each group/year I would very much appreciate it.

N=364

_______(year1) (year2)

(Group1) 124______30

(Group2) 200______10

I would like a confidence level of 95%. I am unsure as to which equation to use and how I should go about selecting a sample from each group/year in order to review applications to calculate an error rate. If there is anyone out there that could walk me through the steps to calculating how many applications I should pull from each group/year I would very much appreciate it.

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