An oil company is considering 2 sites on which to drill, described as follows: site a: profit of oil is found: $60 million loss if no oil is found: $5 million probability of finding oil: 0.2 site b: profit of oil is found: $90 million loss of no oil is found: 0.1 a: which site has the larger expected profit? b: if the expected profit for both sites is not the same, by how much is the expected profit larger?