Tori rented a car and drove 325 miles. She decided to fill up the tank before returning the car to the rental company. She put 11 gallons of gas in the car to fill the tank. She paid $2.85 per gallon for gas. The rental company would have
charged $3.50 per gallon to fill the tank. How much did she save by filling the tank herself?
O $3.50
O $0.65
O $7.15
$29.54

Suppose that 3% of all athletes are using the endurance-enhancing hormone epo (you should be able to simply compute the percentage of all athletes that are not using epo). for our purposes, a “positive” test result is one that indicates presence of epo in an athlete’s bloodstream. the probability of a positive result, given the presence of epo is .99. the probability of a negative result, when epo is not present, is .90. what is the probability that a randomly selected athlete tests positive for epo? 0.0297