In the denominator of the result, there shouldn't be 2. Explanation is therefor also wrong. Probability shouldn't change for p1 = 1 since if everybody had blood type 1 only then finding it on the crime scene wouldn't contribute anything into investigation.
In the denominator of the result, there shouldn't be 2. Explanation is therefor also wrong. Probability shouldn't change for p1 = 1 since if everybody had blood type 1 only then finding it on the crime scene wouldn't contribute anything into investigation.