Philip Musa can build either a large electronies section or a small one in his Birmingham drugstore. He can also gather additional information or simply do nothing. If he gathers additional information, the results could suggest either a favorable or an unfavorable market, but it would cost him $$3,000$ to gather the information. Musa believes that there is a $50-50$ chance that the information will be favorable. If the market is favorable, Musa will earn $$15\mathrm{.}000$ with a large section or $$5,000$ with a small one. With an unfavorable electronics market, how$-$ever. Musa could lose $$20,000$ with a large section or $$10,000$ with a small section. Without gathering additional information. Musa estimates that the probability of a favorable market is