SOLUTION: On a 7 question multiple-choice test, where each question has 3 answers, what would be the probability of getting at least one question wrong?
Give your answer as a fraction
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Give your answer as a fraction
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Question 837014: On a 7 question multiple-choice test, where each question has 3 answers, what would be the probability of getting at least one question wrong?
Give your answer as a fraction Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! On a 7 question multiple-choice test, where each question has 3 answers, what would be the probability of getting at least one question wrong?
Give your answer as a fraction
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Binomial Problem with n = 7 and p(correct) = 1/3 ; p(wrong) = 2/3
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P(at least 1 wrong) = 1 - P(3 correct) = 1 - (1/3)^3 = 0.9630
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Cheers,
Stan H.
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