Question: 23. A multiple-choice test has 30 questions. There are 4 choices for each question. A student who has not studied for the test decides to

23. A multiple-choice test has 30 questions. There are 4 choices for each question. A student who has not studied for the test decides to answer all questions randomly. What probability distribution can be used to gure out his chance of getting at least 20 questions right? (a) Binomial distribution (b) Poisson distribution (c) Normal distribution (d) None of the above

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