How many samples?

1. 1. You have a current performance of approximately 95% as First Time Right. You want to draw a sample to test if this is the true percentage in your population. You are okay with a 2% error in assessment. You want to use a confidence level of 95% and Power of the test as 50%. Find minimum sample size. Use calculator at https://www.benchmarksixsigma.com/calculators/sample-size-calculator-for-1-proportion-test/

   • 456
     32%

     39
   • 321
     21%

     25
   • 734
     22%

     27
   • 1543
     23%

     28

Please sign in or register to vote in this poll.