SOLUTION: A student studying for a vocabulary test knows the meanings of 14 words from a list of 20 words. If the test contains 10 words from the study list, what is the probability that at
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Question 355591: A student studying for a vocabulary test knows the meanings of 14 words from a list of 20 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? (Round your answer to three decimal places.) Answer by edjones(8007) (Show Source):
You can put this solution on YOUR website! 14/20=7/10=.7
Let x=.7 and y=.3
(x+y)^10
=x^10+10x^9y+45x^8y2
=.383 probability that at least 8 of the words on the test are words that the student knows.
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Ed
