The probability of flipping a fair coin and heads landing up is 0.5. the probability of rolling a fair number cube, with sides numbered 1 through 6, and an odd number landing face up is 0.5. what is the probability of flipping heads or rolling an odd number

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