financial analysts have estimated the returns on shares of drucker corporation and the overall market portfolio under various economic conditions as follows. the return for drucker in the following three economic states of nature are forecasted to be: -18% in recession, 10% in moderate growth, and 30% in a boom. estimates for the market as a whole in the same economic states are -9% in recession, 8% in moderate growth, and 23% in boom. the analyst considers each state to be equally likely. using these data, compute the beta of drucker corporation's stock.