SOLUTION: A student takes a 20 questions, true/ false exam and guesses on each questions.What will be the probability of passing if the passing grade is 15 correct out of 20. Is this event l

Question 246857: A student takes a 20 questions, true/ false exam and guesses on each questions.What will be the probability of passing if the passing grade is 15 correct out of 20. Is this event likely to occur?
Answer by richwmiller(17219) (Show Source): You can put this solution on YOUR website!
There is a 50% chance of getting each answer correct by guessing on a true false question. So the student can expect to get 10 correct by guessing.
The student could get more correct (or fewer) but it is not likely.

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