* I HAVE INCLUDED ALL OF THE ANSWERS TO THE QUESTION FOLLOWING, BUT I NEED THE MATH WORKED OUT FOR THE QUESTIONS

Eric and David are roommates. Eric is a personal fitness trainer while David is a professor. Eric likes to wake up early because this allows him to schedule clients as early as 4 am while David often works late at night on research and hence does not like to be bothered in the morning. Eric is quite loud in the morning and will wake up David almost every day. David does not do well at work when he does not have a good night's sleep. The table below shows the payoffs.