Asked by Snehan

On a true-false test, each question has exactly one correct answer: true, or false. A student knows the correct answer to 70% of the questions on the test. Each of the remaining answers she guesses at random, independently of all other answers. After the test has been graded, one of the questions is picked at random. Given that she got the answer right, what is the chance that she knew the answer?

unanswered
Answered by right
0.824
Answered by elviria
its not correct
you need 4 numbers after the ,
Answered by access
0.8235
There are no AI answers yet. The ability to request AI answers is coming soon!