)information about the age of participants in a dance competition is below: a box plot titled "age of participants" and labeled "age" uses a number line from 10 to 35 with primary markings and labels at 10, 15, 20, 25, 30, and 35. the box extends from 17 to 27 on the number line. a line in the box is at 21. the whiskers end at 12 and 33. the middle 50% of the data is between what two numbers? 12 and 21 12 and 33 17 and 27 21 and 33

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

In δabc, m∠acb = 90°, cd ⊥ ab and m∠acd = 45°. find: a find cd, if bc = 3 in

Bc and bd are opposite rays. all of the following are true except a)a,b,c,d are collinear b)a,b,c,d are coplanar c)bc=bd d)b is between c and d