Assessing Evidence
نویسندگان
چکیده
Dwyer is accused of burglary. The police have found on his shoes several fragments of glass that have a mean refractive index close to-but not identical to-the mean refractive index of fragments of a broken window at the scene of the burglary. The police also have found a blood stain near the broken window. Police investigators have subjected to DNA analysis both this stain and a sample of blood that they have taken from Dwyer. For each sample, this analysis attempts to measure the length of fragments at several identifiable sites, or loci, on the DNA molecule. The measurements for the two samples are very close-though not identical-for each locus. How should the significance of this evidence be assessed?
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