document.write( "Question 540490: Suppose you roll a 6 sided die. If you roll a 1 you earn $2, if you roll a 4 you earn $4, any other number you pay $1. How much money should you expect to earn on average.\r
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document.write( "I've worked this different ways and came up with these answers: .1666 and $2\r
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document.write( "Are either of these answers correct? I also got 0.749 and it was marked incorrect. Please help. \n" );
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Algebra.Com's Answer #353715 by stanbon(75887) ![]() You can put this solution on YOUR website! Suppose you roll a 6 sided die. If you roll a 1 you earn $2, if you roll a 4 you earn $4, any other number you pay $1. How much money should you expect to earn on average. \n" ); document.write( "I've worked this different ways and came up with these answers: .1666 and $2 \n" ); document.write( "Are either of these answers correct? I also got 0.749 and it was marked incorrect. \n" ); document.write( "---------- \n" ); document.write( "E(x) = (1/6)*2 + (1/6)*4 + (4/6)*(-1) = (1/3) + (2/3) - (2/3) = $0.33 \n" ); document.write( "============= \n" ); document.write( "Cheers, \n" ); document.write( "Stan H. \n" ); document.write( "=============== \n" ); document.write( " |