Uri asked six friends how many different foreign countries they’d been to. he recorded 0, 1, 1, 2, 5, and 9 countries visited. what is the mean absolute deviation of countries visited? round to the nearest tenth, if needed.

What is the equation of a line passing through the point (6,1) and parallel to the line whose equation 3x=2y+4

Use the distributive law to multiply. 3(4x + 5y + 6)

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