The return on the rush corporation in the state of recession is estimated to be -21% and the return on rush in the state of boom is estimated to be 30%. The return on the Oberman Corp in the state of recession is estimated to be 41% and the return on Oberman in the state of boom is estimated to be -20%. Given this info, what is the covariants between rush and Oberman if there is a .60 probability that the economy will be in the state of boom and a .40 probability that the economy will be in the state of recession.