Name enVision Geometry cawasrealize.com 12-5 Additional Practice Expected Value 1. The expected payout for each play of a carnival game is $0.15. If each game costs $0.50 to play, what is the carnival's expected gain per play? Explain. Expected gain = $0.50 - $0.15 = $0.35 / per play 2. A tile is drawn from a bag at random and then replaced. The probability of drawing a blue tile is 80% and the probability of drawing a red tile is 20%. What is the expected number of blue tiles in 25 draws? 25(0.80) = 20 The expected number of blue tiles in 25 draws is 20. 3. A ten-sided die has the numbers 0 through 9 on its ten faces. What is the expected value when rolling a ten-sided die? Is the expected value a possible outcome? Explain. The expected value is: (0 + 1 + 2 + 3 + 4 + 5 + 6 + 7 + 8 + 9) / 10 =45 4.5 is not a possible outcome. 4. A bag has 6 red marbles, 3 blue marbles, and 1 orange marble. In a game to raise money for a class trip, parents pay $5 and pull a marble randomly from the bag. The payout is $10 for pulling an orange marble, $4 for a blue marble, marble. How much can the class expect to earn per game