professor continually gives exams to her students. She can give three possible types of ex- ams,… 1 answer below »
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professor continually gives exams to her students. She can give three possible types of ex- ams, and her class is graded as either having done well or badly. Letpidenote the probability that the class does well on a typeiexam, and suppose thatp1= 0.3,p2= 0.6, andp3= 0.9. If the class does well on an exam, then the next exam is equally likely to be any of the three types. If the class does badly, then the next exam is always type 1. What proportion of exams are typei,i= 1,2,3?