A person likes to gamble and has $100 on him. He is going to play the following game: if he bets $b, then with probability p, 0 < p < 1, he will win $b; with probability 1 – p, he will lose his $b. He is given the opportunity to play at most 20 times. He is a very disciplined gambler and is going to use the following strategy: • Every time he plays, he will make a bet equal to half of the amount of money he has at that moment.

Principles of Microeconomics
7th Edition
ISBN:9781305156050
Author:N. Gregory Mankiw
Publisher:N. Gregory Mankiw
Chapter22: Frontiers Of Microeconomics
Section: Chapter Questions
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Economics
A person likes to gamble and has $100 on him. He
is going to play the following game: if he bets $b,
then with probability p, 0 < p< 1, he will win $b;
with probability 1 – p, he will lose his $b. He is
given the opportunity to play at most 20 times.
He is a very disciplined gambler and is going to
use the following strategy:
• Every time he plays, he will make a bet equal to
half of the amount of money he has at that
moment.
• If the amount of money he has gets to $300 or
higher, then he will stop playing.
Find the probability that, starting with $100 and
given 20 chances to play the game, this person
will get to $300 or more. Formulate this problem
recursively by writing down the “Bellman
equation." What is (are) the state variable(s)? Be
specific about any constraints or initial/boundary
conditions for this problem.
Transcribed Image Text:Economics A person likes to gamble and has $100 on him. He is going to play the following game: if he bets $b, then with probability p, 0 < p< 1, he will win $b; with probability 1 – p, he will lose his $b. He is given the opportunity to play at most 20 times. He is a very disciplined gambler and is going to use the following strategy: • Every time he plays, he will make a bet equal to half of the amount of money he has at that moment. • If the amount of money he has gets to $300 or higher, then he will stop playing. Find the probability that, starting with $100 and given 20 chances to play the game, this person will get to $300 or more. Formulate this problem recursively by writing down the “Bellman equation." What is (are) the state variable(s)? Be specific about any constraints or initial/boundary conditions for this problem.
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