SOLUTION: A true-false test has ten questions. A student guesses all the answers. Find the probability of getting at least eight questions correct.
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Question 303380: A true-false test has ten questions. A student guesses all the answers. Find the probability of getting at least eight questions correct. Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! A true-false test has ten questions. A student guesses all the answers. Find the probability of getting at least eight questions correct.
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Binomial Problem:
n = 10 ; p = 1/2 ; 8<= x <=10
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P(8<= x <=10) = 1 - binomcdf(10,1/2,7) = 0.0547
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Cheers,
Stan H.
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