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OpenStudy (anonymous):
A student guesses on every question on a multiple choice test that has 8 questions each with 3 possible answers. What is the probability that the student will get at least 6 of the questions right?
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OpenStudy (anonymous):
P(guess 6 correct) + P(guess 7 correct) + P(guess 8 correct)
OpenStudy (anonymous):
look up binomial probability http://www.talkstats.com/showthread.php/146-Binomial-Probabilities
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