This is a graded class activity and is supposed to be completed in $15$ minutes.

In a binary classification problem, we have a data set with $200$ positive and $300$ negative examples. After plotting the ROC we observed that the curve goes through the point TPR $=$ FPR $=0\mathrm{.}45.$ Calculate the Precision at this point.

Write down you answer and a short description of your solution in the text area.