Bayes Help DESPERATELY Needed!!!
Please Please HELP!!! This is based around Bayes and I've spent so much time trying to figure this out.
A crime occurs within an isolated community. A bloodstain is left at the crime scene. Within the adult male population, 71% is White, 16% are Afro-Caribbean and the remainder are Asian.
The offender is male according to a witness and no other information was given.
The bloodstain has genotype ABC12.
Probabilities of someone from the ethnic groups within the relevant population having this genotype are: White, p=0.025; Afro-Caribbean, p= 0.023 and Asian, p=0.012.
A suspect has been arrested: a white male with matching DNA evidence to the scene of the crime.
1) What are the prior odds that an White male committed the crime?
2) Using the information and DNA evidence, what is the Likelihood Ratio in this case?
3) Assume no match between the crime sample and the suspectís sample. What would the Likelihood Ratio be?
Please help me (with workings too) as soon as possible, a prize for the winner and become a hero of mine for life!!!