SOLUTION: Sally takes a quiz with three true or false questions. She does not know the answer to any of the questions, so she guesses on all three. What is the probability she will get all

Algebra ->  Probability-and-statistics -> SOLUTION: Sally takes a quiz with three true or false questions. She does not know the answer to any of the questions, so she guesses on all three. What is the probability she will get all      Log On


   



Question 293975: Sally takes a quiz with three true or false questions. She does not know the answer to any of the questions, so she guesses on all three. What is the probability she will get all three questions correct?
Answer by Fombitz(32388) About Me  (Show Source):
You can put this solution on YOUR website!
Let's look at all of the possibilities of answering three questions correctly (C) and incorrectly (I). There are eight total.
C C C
C C I
C I C
C I I
I C C
I C I
I I C
I I I
P(3 correct)=1/8