Posted by Lisa on Tuesday, May 18, 2010 at 11:16am.
The game of dots is played by rolling a fair die and
receiving $1 for each dot showing on the top face of the
die. What cost should be set for each roll if the game is
to be considered a fair game?

Math  drwls, Tuesday, May 18, 2010 at 11:19am
Expected value = (1+2+3+4+5+6)/6 = 21/6 = 3.5
$3.50 is the breakeven "fair" cost per roll.

Math  Lisa, Tuesday, May 18, 2010 at 11:50am
Thanks, I did not know what the "fair die" meant.

Math  drwls, Tuesday, May 18, 2010 at 4:02pm
A fair die is one that is not "loaded" or "shaved" to favor a particular side.
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