Mathematics, 12.02.2020 18:15 amarierivera547

Charles is taking a multiple choice probability exam, and for each question, there are 3 possible answers, out of which only one is correct. Since the time is short, for any question, with probability 3/4 Charles decides to do the calculations and with probability 1/4 he just choses one of the 3 answers randomly. Whenever he decides to do the calculations, with probability 4/5 he will get the correct answer and with probability 1/5, he gets an answer which matches one of the 2 wrong answers. Suppose that he got a particular question wrong. What is the probability he actually did the calculations

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Charles is taking a multiple choice probability exam, and for each question, there are 3 possible an...

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