You earn 1 point for each correct response on a multiple choice test and lose 0.5 point for each incorrect response. Each question has 4 choices, If a student just guesses, what is the expected value of the guess?

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It will be atleast 40%


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You earn 1 point for each correct response on a multiple choice test and lose 0.5 point for each incorrect response. Each questions has 4 choices.The probability that an answer is correct if the Student guesses is \\The probability that an answer is incorrect if the Student guesses is The expected value of each guess is


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