. In a test an examinee either guesses or copies
copies or knows the answer to a multiple choice question with four choices.
The probability that he makes a guess is 13 and the probability that he copies the answer is 16 .
The probability that his answer is correct given that he copied it is 18.
The probability that he knew the answer to the question given that he correctly answered it is 4k29 .Find the value of k
Best Answer
Explanation:
Let E1 be the event that examinee guesses the answer to the question,
E2 be the event that examine copies the answer to the question,
E3 be the event that examine knows the answer to the question,
And, E be the event that the answer is correct.
On comparing this with 4k /29 we will get k=6
Final Answer:
The value of k=6.
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