Question

The reliability of a Covid-19 test is specified as follows:

Of people having Covid-19 , 90% of the test detect the disease but 10% go undetected. Of people free

of Covid-19 , 99% of the test are judged Covid-19 negative but 1% are diagnosed as showing Covid-19

positive .

From a large population of which only 0.1% have Covid-19 , one person is selected at random, given

the Covid-19 test and Pathologist reports him/her as Covid-19 positive.

(ii) What is the probability that the person is actually not having Covid-19 ?

(a) 0.998 (b) 0.999 (c) 0.001 (d)0.111​

Answer 1

bhar jaungi man h aapko kal men bhi nahi hai aapane