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A group of researchers wanted to know whether a new test for a genetic

disorder worked as well as the gold standard and established but very expensive an invasive test. A population of 1000 people were selected and screened for the genetic disorder using the new test and the gold standard (also known as, "the truth").  According to a gold standard test, the prevalence of the genetic disorder was 10%. of those with the genetic disorder, 90 people tested positive using the new test. Of those people of those without the genetic disorder, 720 tested negative using the new test.


Prevalence is defined as those with the genetic disorder 


What is the specificity of this test? Interpret this value






                                                Diseased                      not diseased             total 


Screened +




Screened -

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