<PRE><B>Question 1134483</B>
Test Results Tuberculosis No Tuberculosis Total
Positive         4995               99,950       104,945
Negative            5         9,895,050         9,895,055
Total           5,000          9,995,000       10,000,000 

Positive result is 104945/10000000=0.0105

PPV is probability when test is positive disease is present.  That is 4995/104945 or 0.0476 or 4.76%

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