# SOLUTION: A quiz has five multiple-choice questions, each with 4 possible answers. If the quiz is solved by guessing, find the probability that at least one answer is correct

Algebra ->  Algebra  -> Probability-and-statistics -> SOLUTION: A quiz has five multiple-choice questions, each with 4 possible answers. If the quiz is solved by guessing, find the probability that at least one answer is correct      Log On

 Ad: Algebra Solved!™: algebra software solves algebra homework problems with step-by-step help! Ad: Algebrator™ solves your algebra problems and provides step-by-step explanations!

 Algebra: Probability and statistics Solvers Lessons Answers archive Quiz In Depth

 Click here to see ALL problems on Probability-and-statistics Question 419238: A quiz has five multiple-choice questions, each with 4 possible answers. If the quiz is solved by guessing, find the probability that at least one answer is correctAnswer by ewatrrr(10682)   (Show Source): You can put this solution on YOUR website! ``` Hi A quiz has five multiple-choice questions, each with 4 possible answers. P(guessing answer correctly) = .25 P(guessing incorrectly) = .75 Note: The probability of x successes in n trials is: P = nCx* where p and q are the probabilities of success and failure respectively. In this case p=.25and q =.75 nCx = P(atleast one correct of the 5 questions) = 1 - P(none correct) = 1 - (.75)^5 ```