jennifer is playing a game at an amusement park. there is a 0.1 probability that she wil sore
10 points, a 0.2 probability that she will sore 20 points, and a 27 probability that he il core
30 points. how many points can jennifer expect to receive by playing the game?
juan is playing a game in which he can win $100 with probability 01, 200 with probabiliy 02,
or $300 with probability 0.7. what is the expected value of luan's winings?