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Mathematics, 21.05.2021 16:10, anthonymw
A 20 question multiple choice test is given to someone who randonly guesses at all 20 questions. If each question has four answer choices, what us the expected number the person will asnwer correctly?
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Answers: 2
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A 20 question multiple choice test is given to someone who randonly guesses at all 20 questions. If...
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