Mathematics, 27.02.2020 20:51 brandonm39
Exercise 2.64. On a test there are 20 true-or-false questions. For each problem the student (a) knows the answer with probability p,(b) thinks he knows the answer, but is wrong with probability q, (c) is aware of the fact that he does not know the answer with probability r. We assume that these happen independently for each question and that p+q+ r = 1. If the student doesn't know what to answer then he will guess by choosing true or false with probability 1/2-1/2. What is the probability that he will get the correct answer for at least 19 questions?
Answers: 3
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Exercise 2.64. On a test there are 20 true-or-false questions. For each problem the student (a) know...
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