Question 674985: A student takes a 10 question true-false quiz, but did not study and randomly guesses each answer. Find the probability that the student passes the quiz with a grade of at least 40% of the questions correct. (Round your answer to three decimal places.)
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A student takes a 10 question true-false quiz, but did not study and randomly guesses each answer. Find the probability that the student passes the quiz with a grade of at least 40% of the questions correct. (Round your answer to three decimal places.)
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Binomial Problem with n = 10 and p(correct) = 1/2
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P(x >= 4) = 1 - binomcdf(10,0.5,3) = 0.8281
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Cheers,
Stan H.
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