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Assume the online test in HA1011 has 15 multiple questions. Each question has five possible answers, of which only one is correct. i. What is
Assume the online test in HA1011 has 15 multiple questions. Each question has five possible answers, of which only one is correct.
i. What is the probability that guesswork will yield at least seven correct answers? (2 marks)
ii. What is the expected number of correct answers by guesswork?
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