[Ä Ã´i Huyệt] [ʿ�] [David, the promoter of an outdoor concert, expects a net profit of $100,000, unless it rains, which would reduce the net profit to $40,000. The probability of rain is 0.20. For a premium of $29,000 David can purchase insurance coverage that would pay him $100,000 in case of rain. Find the expe] [chim nhạn] [Tá»± Truyện Andrew Carnegie] [luáºÂn ngữ] [ bà ẩn mãi mãi là bà ẩn] [phong thủy toaÌ€n thư] [dau tu tai chinh] [tiếnganh1]