There are two urns each containing two blue marbles and two red marbles. We randomly draw two marbles from the first urn and then randomly draw two marbles from the second urn, without returning any marbles. What is the probability that all of the four marbles that we drew are blue?

What is the remainder when 2872 is divided by 76? a) 51 b) 57 c) 60 d) 63

Abus travels 36 miles in 45 minutes. enter the number of miles the bus travels in 60 minutes at this rate.

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