SOLUTION: I've been trying to figure this out for quite a quite now, but cant seem to get the solution correct. Using probability distribution I need to figure out the following: what

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Question 1130886: I've been trying to figure this out for quite a quite now, but cant seem to get the solution correct.
Using probability distribution I need to figure out the following:
what is the probability of getting three questions on a four question (true or false) test correct by guessing?
I'm looking for (p) the probability of 3 0ut of 4. I believable it is .5, but that's just a guess. I can't figure out how to calculate this.
I know it's a 4 question test with 8 different t/f possibilities, but I can't figure out how to get (p) using probability distribution.
Thank you

Answer by ikleyn(52765)   (Show Source): You can put this solution on YOUR website!
.
If you have 4 True-False questions, then there are   = 16  possible answers.


So, the probability to randomly guess 3 answers correctly is   =  = .


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