If the population mean is $420, what is the probability the null hypothesis will be rejected (using the rejection region you calculated above)? give your answer in the following format: 0.0450 (if it is 0.045) or 0.2345 (if it is for example 0. i. e. use 4 decimals for your answer.

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