Cedric has 4 markers, 1 blue pen, and 1 black pen in his pencil pouch. What is the probability that he chooses a pen if he reaches in without looking to choose one?

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

What is the circumference of a circle with an area of 50.24 cm²?

Acompany made a profit of 75000 over a period of 6 years on an initial investment of 15000 what is the annual roi