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Scientific evidence

2017

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Hypothesis Testing In Law And Forensic Science: A Memorandum, David H. Kaye Jan 2017

Hypothesis Testing In Law And Forensic Science: A Memorandum, David H. Kaye

Journal Articles

The Organization of Scientific Area Committees for Forensic Science (OSAC), was established to promote and develop forensic-science standards based on sound scientific principles. One of the first standards to be approved deals with declaring fragments of glass to be either distinguishable or indistinguishable in their chemical composition. This determination is important when it is suspected that small fragments associated with a defendant came from the scene of a crime involving broken glass. Because of instrumental measurement error, even fragments with identical elemental concentrations will display some differences. To account for measurement error, the standard uses statistical hypothesis tests that presume …