# Proabability With Test Questions

• Nov 8th 2009, 10:43 AM
Artemis33
Proabability With Test Questions
I don't completely know how to set this problem up. The question is:
An exam has only three true and false questions, the probability that you know the first question is 67%, the probability that you know the second question is 57% and the probability that you know the last question is 37%.
What is the probability that you get all three correct?

This is for a college class, but I think it be easier than I think it is.
• Nov 8th 2009, 12:05 PM
mr fantastic
Quote:

Originally Posted by Artemis33
I don't completely know how to set this problem up. The question is:
An exam has only three true and false questions, the probability that you know the first question is 67%, the probability that you know the second question is 57% and the probability that you know the last question is 37%.
What is the probability that you get all three correct?

This is for a college class, but I think it be easier than I think it is.

Assuming independence, (0.67)(0.57)(0.37) = ....