Math Problem Statement
In the game of roulette, a player can place a $44 bet on the number 55 and have a StartFraction 1 Over 38 EndFraction 1 38 probability of winning. If the metal ball lands on 55, the player gets to keep the $44 paid to play the game and the player is awarded an additional $140140. Otherwise, the player is awarded nothing and the casino takes the player's $44. What is the expected value of the game to the player? If you played the game 1000 times, how much would you expect to lose? Question content area bottom Part 1 The expected value is $enter your response here. (Round to the nearest cent as needed.) Part 2 The player would expect to lose about $enter your response here. (Round to the nearest cent as needed.)
Solution
To solve this, we'll break the problem down into two parts:
Part 1: Expected Value Calculation
The expected value for a game of chance can be calculated using the following formula:
Where:
- is the probability of winning.
- is the net amount won, including the player's original bet.
- is the probability of losing.
- is the amount lost when the player loses.
Step 1: Define the values.
- The probability of winning is .
- The probability of losing is .
- The win amount is (since the player gets their initial bet of $44 back plus $140 in winnings).
- The lose amount is (the player loses their bet).
Step 2: Apply the values to the formula.
So, the expected value for the game is -38 dollars. This means that on average, the player expects to lose $38 per game.
Part 2: Expected Loss Over 1000 Games
To find the expected loss over 1000 games, simply multiply the expected value per game by 1000:
So, if you played 1000 games, you would expect to lose about $38,000.
Final Answers:
- The expected value of the game is -38 dollars.
- The player would expect to lose about $38,000 if they played 1000 times.
Would you like more details or have any questions about this solution?
Here are 5 related questions to consider:
- How does increasing the number of bets affect the expected value in gambling games?
- What would happen to the expected value if the casino paid out $200 instead of $140 for a win?
- Can a player ever expect to win money in a game with a negative expected value?
- How is expected value used in decision-making in other areas like finance?
- If the probability of winning changes, how does it affect the overall expected loss?
Tip: Understanding expected value helps in evaluating risk in games, investments, and everyday decisions.
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Math Problem Analysis
Mathematical Concepts
Probability
Expected Value
Multiplication
Addition
Subtraction
Formulas
E = (P_win * win amount) + (P_lose * lose amount)
Theorems
Expected Value Theorem
Suitable Grade Level
Grades 10-12