It is given that only 0.1% of a large population have COVID infection. In this population, the reliability of COVID RTPCR-test is specified as follows : For persons having COVID, 90% of the test detects the disease but 10% goes undetected. For persons not having COVID, 99% of the test is judged COVID negative but 1% are diagnosed as COVID positive. Based on the above informations, answer the question : The probability of the person tested as COVID positive, given that he is actually having COVID is :

Question

Option 1: 1/1000

Option 2: 1/10

Option 3: 8/10

Option 4: 9/10

AfterBoards · Accepted Answer

The answer is '9/10'. View full solution:

CUET Mathematics 2022 17 Aug Shift 2 PYQs

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