SOLUTION: Paul takes a 20 question true false test and randomly guesses at each answer what is the probability of his passing the quiz if it takes at least 12 correct answers
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Question 272486: Paul takes a 20 question true false test and randomly guesses at each answer what is the probability of his passing the quiz if it takes at least 12 correct answers Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! Paul takes a 20 question true false test and randomly guesses at each answer what is the probability of his passing the quiz if it takes at least 12 correct answers
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Binomial: n = 20 ; p = 0.5
P(12 <= x <= 20) = 1-binomcdf(20,0.5,11) = 0.2517
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Cheers,
Stan H.
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