- Tardigrade
- Question
- Mathematics
- In a test, an examinee either guess or copies or knows the answer to a multiple choice question with four choices and only one correct option. The probability that he makes a guess is (1/3). The probability that he copies the answer is (1/6). The probability that the answer is correct, given that he copied it, is (1/8). Find the probability that he knows the answer to the question, given that he correctly answered it.
Q. In a test, an examinee either guess or copies or knows the answer to a multiple choice question with four choices and only one correct option. The probability that he makes a guess is . The probability that he copies the answer is . The probability that the answer is correct, given that he copied it, is . Find the probability that he knows the answer to the question, given that he correctly answered it.
Solution: