SOLUTION: a student takes a 5 question true or false quiz. since the student has not studied,he decides to flip a coin to determine the answers.what is the probability that the student guess

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Question 582479: a student takes a 5 question true or false quiz. since the student has not studied,he decides to flip a coin to determine the answers.what is the probability that the student guesses exactly 3 out of 5 correctly?
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Answer by stanbon(75887) About Me  (Show Source):
You can put this solution on YOUR website!
a student takes a 5 question true or false quiz. since the student has not studied,he decides to flip a coin to determine the answers.what is the probability that the student guesses exactly 3 out of 5 correctly?
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Binomial with n = 5 ; p(correct) = 1/2
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P(x = 3) = 5C3(1/2)^5 = 10(1/32) = 5/16
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Cheers,
Stan H.