can please check my answer:
Q. 500 individuals tested a new biometric security system that will be used to verify that people attempting to enter a site are authorised to do so. 200 of the testers were authorised users and 300 were not. At one particular threshold the system shut out 10 individuals it should have admitted and admitted 2 individuals it should have shut out.Find out
a. What is the false match rate (FMR) of this system at this threshold?
b. What is the false non-match rate (FNMR) of this system at this threshold?
Answer a. 0.4% b. 3.33%