SOLUTION: sam took a 15-question true-false quiz. If he randomly guesses on each question, what is the probability that sam will get 10 out of 15 questions correct? express the answer as a p
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Question 447787: sam took a 15-question true-false quiz. If he randomly guesses on each question, what is the probability that sam will get 10 out of 15 questions correct? express the answer as a percent.
A.) 0.003%
B.) 0.1%
C.) 3.2%
D.) 9.2% Answer by stanbon(75887) (Show Source):
You can put this solution on YOUR website! sam took a 15-question true-false quiz. If he randomly guesses on each question, what is the probability that sam will get 10 out of 15 questions correct? express the answer as a percent.
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Binomial Problem with n = 15 and p = 1/2
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P(x = 10) = 15C10(1/2)^15 = 0.0916 or 9.2%
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Cheers,
Stan H.
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A.) 0.003%
B.) 0.1%
C.) 3.2%
D.) 9.2%
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