On a scale drawing of a table, the length is 12 units and the width is 8 units. Each unit on the grid represents 15 cm. Xavier says that if he draws another scale drawing of the table with a scale of 20 cm for each unit, it will be larger than the original drawing because 20 > 15. Explain why Xavier is incorrect with a drawing.

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