You are randomly assigned a password consisting of 9 different characters chosen from the digits 0 to 9 and the letters A to Z. As a percent, what is the probability that you are
assigned a password consisting of only letters? Round the answer to the nearest tenth of a
percent.

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

If the sales price of a dvd is $20 and the markup is 34%, what is the cost of the dvd?

Write an equation of the line that passes through 9,2 and is parallel to the line y=5/3x+9