IQ scores are normally distributed in the population. A major form of identification in criminal investigations is fingerprints.
Fingerprints vary on many different dimensions, one of which is called ridgecount.
The ridgecount of people in the U.S. follows a normal distribution with a mean of 165.00 and standard deviation of 10.00. Out of ten suspects, one of them has a ridgecount of 225. The probability that someone ahs a ridgecount greater than 200 is .0002. Given that one of the suspects is one on these extremely rare individuals it supports your suspicision that this is indeed the culprit. 5.