SOLUTION: an unprepared student makes random guesses for the ten true-false questions on a quiz. Find the probability that there is at least one correct answer.
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Question 275441: an unprepared student makes random guesses for the ten true-false questions on a quiz. Find the probability that there is at least one correct answer.
Answer by edjones(8007) (Show Source): You can put this solution on YOUR website!
.5 probability of getting an answer wrong.
.5^10=.000977 probability of getting them all wrong.
1-.000977=.9990234 probability that there is at least one correct answer.
.
Ed
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