[Láºp Và Giải Tá» Vi Ä áº©u Số - Phương Pháp Ä oán Mệnh] [ì� í�S¸í⬢�] [lịch sử 11] [pronounciate] [nha trang 2016] [trở về eden] [thì hiện tại tiếp diễn] [S��� TAY KI���N TH���C CHINH PH���C 10 ��I���M] [Chi�n L��c Marketing Cho Th� Tr��ng C�ng Ngh�] [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]