shelby needs the total weight of her suitcase under 50 lbs. Currently shelby's suitcase weighs 42.5lbs. how many more pounds can shelby pack in her suitcase and stay within her limit

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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

The radius of a sphere is 3 inches. which represents the volume of the sphere?