Posted by Katherine on .
you take a threequestion multiplechoice test.each question has four choices.you don't know any of the answers. what is the experimental probability that you will guess exactly two out of three correctly
please help me i am confused

math 
PsyDAG,
The chance of getting an item right = 1/4. The chance of getting it wrong = 3/4.
The probability of getting 2 right and one wrong is found by multiplying the individual probabilities.