5. People who commit bank robberies must make the decision to rob banks.That decision comes with a built-in dilemma: every minute a robber stays in the bank increases the amount of money the robber will get, but every minute in the bank also increases the likelihood that the robber will get caught.

A study of more than 5000 bank robberies between 2005 and 2007 found that the average bank robbery lasted 4 minutes and 16 seconds and yielded about $20,000. The study also found that each additional minute that robbers spent in the bank increased their haul by about $2,000.

Explain how an economically rational bank robber should determine how many minutes to spend in the bank committing the robbery. Be sure to explain the principle that a rational bank robber would apply to this decision, and how that principle would be applied