A sports club tests its players for steroid usage with a test that gives a positive reading 93% of the time when administered to a steroid user and gives a negative reading 96% of the time when administered to a player who does not use steroids. It is known that 8% of the players are steroid users.Draw a probability tree diagram for the given problem.

What is the probability that a player does not use steroids, given that the person had a positive reading on the test? Round your answer to four decimal places.