A class is taking a test that consists of 20 true/false questions. The instructor made a mistakeand printed the quiz for a much more advanced class. The students don’t know any of thecontent and they randomly guess at every question without event reading them.A. Explain why this is a binomial random variable.B. What are the values of the parameters n and p?C. What is the mean quiz score?D. What is the standard deviation of the quiz scores?E. In order to pass, a student needs to get 12 or more questions correct. What is theprobability that a student will get 12 or more questions correct?F. In order to get an A, a student needs to get 18 or more questions correct. What isthe probability that a student will get 18 or more questions correct?G. What is the probability that a student will get all 20 questions correct?
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