SOLUTION: an unprepared student makes a random guesses on all questions if her multiple choice test. If there are 17 questions and each question has 4 possible answers, what is the probabili
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Question 353428: an unprepared student makes a random guesses on all questions if her multiple choice test. If there are 17 questions and each question has 4 possible answers, what is the probability she will answer at least one answer right Found 2 solutions by robertb, edjones:Answer by robertb(5830) (Show Source):
You can put this solution on YOUR website! expand the binomial (x+y)^17
Let x=..75 and y=.25
.
x^17=.0075 all wrong.
1-.0075=.9925 probability she will answer at least one answer right.
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Ed
