SOLUTION: A student takes a 24 question multiple choice exam but did not study and randomly guesses each answer. Each question has three possible choices for the answer. Find the probability
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Question 789487: A student takes a 24 question multiple choice exam but did not study and randomly guesses each answer. Each question has three possible choices for the answer. Find the probability that the student guesses more than 75% of the questions correctly. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A student takes a 24 question multiple choice exam but did not study and randomly guesses each answer. Each question has three possible choices for the answer. Find the probability that the student guesses more than 75% of the questions correctly.
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Binomial Problem with n = 24 and p(correct) = 1/3
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Note: 75% of 24 = 18
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P(18<=x<=24) = 1 - binomcdf(24,1/3,17) = 0.000036
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Cheers,
Stan H.
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