About (a) the national flufferball association decides to implement a drug screening procedure to test its athletes for illegal performance enhancing drugs. 3% of the professional flufferball players actually use performance enhancing drugs. a test for the drugs has a false positive rate of 2% and a false negative rate of 4%. in other words, a person who does not take the drugs will test positive with probability 0.02. a person who does take the drugs will test negative with probability 0.04. a randomly selected player is tested and tests positive. what is the probability that she really does take performance enhancing drugs?