Question 405720: A student studying for a vocabulary test knows the meanings of 14 words from a list of 22 words. If the test contains 10 words from the study list, what is the probability that at least 8 of the words on the test are words that the student knows?
Answer by stanbon(75887)   (Show Source):
You can put this solution on YOUR website! A student studying for a vocabulary test knows the meanings of 14 words from a list of 22 words. If the test contains 10 words from the study list, what is the probability that at least 8 of the words on the test are words that the student knows?
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Binomial Problem with n = 22 and p = 14/22 = 7/11
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P(8 <= x <= 22) = 1 - binomcdf(22,7/11,7) = 0.9978
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Cheers,
Stan H.
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