HCU MCA 2016 Paper

A teacher tells her students that although she always use an average to calculate their course grades, she gives more weight to the final exam grade. She assures students that if they can perform well on final, then even if they performed poorly on the other exams, they must have learned the material. For three semesters she kept track of how students did on the final and how they did in the course which is given below. What is the probability that a student, taken at random from the class, would have passed her course ?

	Course
Final	Pass	Fail
Pass	142	34
Fail	89	56