document.write( "Question 428822: Hi, I am having a very hard time solving this stats problem and if someone could give me some assistance I would be ever greatful. The question is as follows. \"There is a new game and a friend asks your advice on playing it. Like yahtzee, it is played with 5 fair sided dice. The game costs $1 to play. The player wins $50 for rolling a total greater than 27. What is your friends expected gain or loss for one play? Be sure to consider all possible cases\" I am pretty sure that I should use a multinomial for this problem but I don't have any idea how to set it up. I would appreciate it very much if someone could run me through how to do it. \n" ); document.write( "
Algebra.Com's Answer #297979 by stanbon(75887)![]() ![]() ![]() You can put this solution on YOUR website! \"There is a new game and a friend asks your advice on playing it. Like yahtzee, it is played with 5 fair sided dice. The game costs $1 to play. The player wins $50 for rolling a total greater than 27. What is your friends expected gain or loss for one play? \n" ); document.write( "----- \n" ); document.write( "Throwing five 6-sided dice you can get 6^5 = 7776 different results. \n" ); document.write( "You would have to count the number of results that have a sum \n" ); document.write( "greater then 27; say that number is \"x\". \n" ); document.write( "-- \n" ); document.write( "Then the probability of winning is x/7776. \n" ); document.write( "And probability of losing is [1-(x/7776)] \n" ); document.write( "--- \n" ); document.write( "Random gain values are: 49 and -1 \n" ); document.write( "--- \n" ); document.write( "Expected gain is [49[x/7776]] + [-1[1-[x/7776]] \n" ); document.write( "======================= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( " \n" ); document.write( " |