SOLUTION: If a student randomly guesses at 15 multiple-choice questions, find the probability that the student gets exactly five correct. Each question has four possible choices.

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Question 1134191: If a student randomly guesses at 15 multiple-choice questions, find the probability that the student gets exactly five correct. Each question has four possible choices.

Answer by Boreal(15235) About Me  (Show Source):
You can put this solution on YOUR website!
Binomial with 15C5 ways to get 5 correct (3003). Probability of correct on any one is 1/4.
3003 multiplied by 0.25^5*0.75^10=0.1651