SOLUTION: A person randomly selects answers to all 10 questions on a multiple-choice quiz. Each question has 1 correct answer and 3 incorrect answers.
Find the probability that at least 8
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Question 731180: A person randomly selects answers to all 10 questions on a multiple-choice quiz. Each question has 1 correct answer and 3 incorrect answers.
Find the probability that at least 8 answers are correct.
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A person randomly selects answers to all 10 questions on a multiple-choice quiz. Each question has 1 correct answer and 3 incorrect answers.
Find the probability that at least 8 answers are correct.
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P(correct) = 1/3
P(8<= x <=10) = 1 - P(0<= x <=7) = 1 - binomcdf(10,1/3,7) = 0.0034
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Cheers,
Stan H.
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