SOLUTION: In a particular math class, there is a 90% chance that a student will pass if they study regularly. The probability of passing if a student does not study is 30%. If 75% of the stu

Question 1150401: In a particular math class, there is a 90% chance that a student will pass if they study regularly. The probability of passing if a student does not study is 30%. If 75% of the students study, what is the probability that a randomly selected student will pass the class?
Answer by ikleyn(52798) (Show Source): You can put this solution on YOUR website!
.


    P = 0.75*0.9 + (1-0.75)*0.3 = 0.75.      ANSWER


This formula is OBVIOUS and SELF-EXPLANATORY.

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