A drug test for athletes has a 5% false positive rate (an athlete tests positive given no drugs) and a 10% false negative rate (an athlete tests negative given drugs). Of the athletes tested, 4% have actually been using the prohibited drug. If an athlete tests positive, what is the probability that the athlete has actually been using the prohibited drug (probability of drugs given a positive test)?.

In an ecosystem, marsh snails feed on phytoplankton and painted turtles feed on marsh snails. pollution has resulted in the depletion of phytoplankton. what effect would this situation likely have on the population of marsh snails and painted turtles? as phytoplankton were destroyed, the population of marsh snails would most likely then the population of painted turtles would mostly likely a. 1. increase 2. decrease 3. stay the same b. 1. increase 2. decrease 3. stay the same

Find the number if 3.7% of it is 37% of 37.

How do we determine if they are made with matter