SOLUTION: A student randomly guesses the answers to a five question true/false test. If there is a 50% chance of guessing correctly on each question, what is the probability that the studen
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Question 221038: A student randomly guesses the answers to a five question true/false test. If there is a 50% chance of guessing correctly on each question, what is the probability that the student misses exactly 1 question?
Answer by stanbon(75887) (Show Source): You can put this solution on YOUR website!
A student randomly guesses the answers to a five question true/false test. If there is a 50% chance of guessing correctly on each question, what is the probability that the student misses exactly 1 question?
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It's a binomial problem with n=5, p=1/2, x=1
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P(x=1) = 5C1(1/2)^1(1/2)^4 = 5*1/32 = 5/32
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Cheers,
Stan H.
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