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week 4 individual paper - Decision of Uncertainty 1 Running...

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Decision of Uncertainty 1 Running head: Decision of Uncertainty Paper Decision of Uncertainty Christopher Wall University of Phoenix Kent Moser QNT/HC 561 March 22, 2010
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Decision of Uncertainty 2 Decision of Uncertainty One of the important features of medicine is diagnostic testing. The companies that produce diagnostic tests are multi-billion dollar companies. Not only is the effectiveness of their tests important for their bottom line, but it is also important for the health and well-being of those who rely on the tests for their health. One such test important diagnostic test is the test for colorectal cancer known as the fecal occult blood test. When analyzing the effectiveness of such tests, we consider the sensitivity and the specificity of the test. In this case, the sensitivity of the test is the proportion of results that correctly identify people with colorectal cancer. In symbolic terms, P (testing positive | have colorectal cancer). The specificity is the proportion of tests that correctly identify those people who do not have colorectal cancer. Symbolically, it is P (testing negative | do not have colorectal cancer).
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