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Direction: Read the following text and answer the following questions on the basis of the same:
The reliability of a COVID PCR test is specified as follows:
Of people having COVID, 90% of the test detects the disease but 10% goes undetected. Of people free of COVID, 99% of the test is judged COVID negative but 1% are diagnosed as showing COVID positive. From a large population of which only 0.1% have COVID, one person is selected at random, given the COVID PCR test, and the pathologist reports him/ her as COVID positive.
Q. What is the probability of the ‘person to be tested as COVID positive’ given that ‘he is actually not having COVID’?
  • a)
    0.01
  • b)
    0.99
  • c)
    0.1
  • d)
    0.001
Correct answer is option 'A'. Can you explain this answer?
Verified Answer
Direction: Read the following text and answer the following questions...
Probability of person to be tested as Covid positive given that he is actually not having Covid = P(G/E)= 1% = 1/100 = 0.01
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Direction: Read the following text and answer the following questions on the basis of the same:The reliability of a COVID PCR test is specified as follows:Of people having COVID, 90% of the test detects the disease but 10% goes undetected. Of people free of COVID, 99% of the test is judged COVID negative but 1% are diagnosed as showing COVID positive. From a large population of which only 0.1% have COVID, one person is selected at random, given the COVID PCR test, and the pathologist reports him/ her as COVID positive.Q. What is the probability of the ‘person to be tested as COVID positive’ given that ‘he is actually not having COVID’?a)0.01b)0.99c)0.1d)0.001Correct answer is option 'A'. Can you explain this answer?
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Direction: Read the following text and answer the following questions on the basis of the same:The reliability of a COVID PCR test is specified as follows:Of people having COVID, 90% of the test detects the disease but 10% goes undetected. Of people free of COVID, 99% of the test is judged COVID negative but 1% are diagnosed as showing COVID positive. From a large population of which only 0.1% have COVID, one person is selected at random, given the COVID PCR test, and the pathologist reports him/ her as COVID positive.Q. What is the probability of the ‘person to be tested as COVID positive’ given that ‘he is actually not having COVID’?a)0.01b)0.99c)0.1d)0.001Correct answer is option 'A'. Can you explain this answer? for JEE 2024 is part of JEE preparation. The Question and answers have been prepared according to the JEE exam syllabus. Information about Direction: Read the following text and answer the following questions on the basis of the same:The reliability of a COVID PCR test is specified as follows:Of people having COVID, 90% of the test detects the disease but 10% goes undetected. Of people free of COVID, 99% of the test is judged COVID negative but 1% are diagnosed as showing COVID positive. From a large population of which only 0.1% have COVID, one person is selected at random, given the COVID PCR test, and the pathologist reports him/ her as COVID positive.Q. What is the probability of the ‘person to be tested as COVID positive’ given that ‘he is actually not having COVID’?a)0.01b)0.99c)0.1d)0.001Correct answer is option 'A'. Can you explain this answer? covers all topics & solutions for JEE 2024 Exam. Find important definitions, questions, meanings, examples, exercises and tests below for Direction: Read the following text and answer the following questions on the basis of the same:The reliability of a COVID PCR test is specified as follows:Of people having COVID, 90% of the test detects the disease but 10% goes undetected. Of people free of COVID, 99% of the test is judged COVID negative but 1% are diagnosed as showing COVID positive. From a large population of which only 0.1% have COVID, one person is selected at random, given the COVID PCR test, and the pathologist reports him/ her as COVID positive.Q. What is the probability of the ‘person to be tested as COVID positive’ given that ‘he is actually not having COVID’?a)0.01b)0.99c)0.1d)0.001Correct answer is option 'A'. Can you explain this answer?.
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