SOLUTION: What is the mean number of mistakes expected when there is one correct answer out of four and you can continuously draw until you draw the correct answer, with replacement after ea

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Question 860209: What is the mean number of mistakes expected when there is one correct answer out of four and you can continuously draw until you draw the correct answer, with replacement after each mistake?
Answer by ewatrrr(24785) About Me  (Show Source):
You can put this solution on YOUR website!
 

Hi,

p(correct) = .25,  p(incorrect(.75)

3/4 of the draws will result in a mistake