Extra Problem 4 - Probability Rules Applied 2

Extra Problem 4 - Probability Rules Applied 2 - EMGT 269...

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EMGT 269 – Elements of Problem Solving and Decision Making Instructor: Dr. J. Rene van Dorp EXTRA PROBLEM 4: SCREENING FOR COLORECTAL CANCER The fecal occult blood test, widely used both in physicians’ offices and at home to screen patients for colon and rectal cancer, examines a patient’s stool sample for blood, a condition indicating that cancer may be present. A recent study funded by the National Cancer Institute found that of 15,000 people tested on an annual basis, 10% were found to have blood in their stools. These 10% underwent further testing, including colonoscopy, the insertion of an optical- fiber tube through the rectum in order to inspect the colon and rectum visually for direct indications of cancer. Only 2.5% of those having colonoscopy actually had cancer. Additional information in the study suggests that, of the patients who were tested, approximately 5 out of 1000 tested negative (no blood in stool) but eventually did develop cancer.
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Extra Problem 4 - Probability Rules Applied 2 - EMGT 269...

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