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Suppose I play a gambling game where I either win or lose k dollars. Suppose further that the chance of winning is p = 0.5.
Suppose I play a gambling game where I either win or lose k dollars. Suppose further that the chance of winning is p = 0.5. I employ the following strategy to try to guarantee that I win some money.
I bet $1. If I lose, I double my bet to $2. If I lose again, I double my bet again to $4. If I lose again, I double my bet again to $8. I continue until I win.
Let X be the amount of money that I bet on the last game.
(a) What is the net amount of money that I can win?
(b) Find the expected value of X.
(c) Discuss if this strategy makes sense or not.
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