[С���Ǹ�] [%A7%E3%A7ѧާ%E0 %A7%E3%A7%E0%A7ҧ%E0%A7%DB %A7%E2%A7ѧ٧%E5%A7ާ֧%F0%A7%EB%A7֧֧%E3%A7%F1] [Kho tÃÂÂ] [50 quy tắc vàng] [Cháu gái người mộng du - Erle Stanley Gardner] [SÆÃââ‚�] [Ä ông A Sáng] [Nóng Giận Là Bản Năng, Tĩnh Lặng Là Bản Lĩnh] [phạm minh hạc] [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. F]