3 articles trouvés pour ce sujet.
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The test for some disease is 99% accurate |
2010-02-24 |
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baaba pose la question :
Assume that the test for some disease is 99% accurate. If somebody tests positive for that disease, is there a 99% chance that they have the disease?
Chris Fisher lui répond. |
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Probability of H.I.V. tests |
2007-05-07 |
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Danielle pose la question :
A medical test detects H.I.V. Among those who have H.I.V., the test will detect the disease with probability 0.95; among those who do NOT have H.I.V., the test will falsely claim that H.I.V. is present with probability 0.0125. Among those who take this test, 4% have H.I.V. The test is given to Lucille, and indicates that she has H.I.V. What is the probability that Lucille actually has H.I.V.?
Stephen La Rocque lui répond. |
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False Positives |
2000-10-29 |
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James pose la question :
A rare disease infected 1 in 1000 people in the population. A test for the disease is accurate 99% of the time when given to an infected person and also when given to a heathy person. - Fill out a two-tier tree diagram and find the probability of the false positive(i.e the conditional probabily of being healty even when tested postive by the test) Comment on the result?
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Penny Nom lui répond. |
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