Let x be the fair price for this game.
From the given data, the following Table is calculated:
Event | Value (x) | Probability (p) | x.p |
Drawing the prize of $40 | 40 - x | 4/8 = 0.5 | (40 - x) X 0.5 = 20 - 0.5 x |
Drawing the prize of $100 | 100 - x | 3/8 = 0.375 | (100 - x) X 0.375 = 37.5 - 0.375 x |
Drawing the prize of $2000 | 2000 - x | 1/8 = 0.125 | (2000 - x) X 0.125 = 250 - 0.125x |
Total = Expected Value of the game | 307.5 - x |
For fair price for the game,
Expected Value of the gamemust be 0.
Thus, we get:
307.5 - x = 0
So,
x = the fair price for this game.= 307.50
So,
Answer is:
307.50
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