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### Question 12: I arrive at my History Final, look at the exam, and realize I don't know any of these answers. So, I decide

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### Question 12: I arrive at my History Final, look at the exam, and realize I don't know any of these answers. So, I decide to randomly guess at each multiple-choice question (A-D) in a test of 45 questions. This means I have a 25% chance of getting any single question correct. Using the normal approximation to the binomial: a) What is the approximate probability that I get 30 or more questions correct? b ) What is the approximate probability that I get 18 or fewer questions correct? A

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