The expected value was already calculated as:
[tex]E=-3.23[/tex]
The expected value is the mean value you would get per try.
Since we played 623, the expected value is 623 times the expected valu for a single play, so:
[tex]E_{623}=623\cdot E=623\cdot(-3.23)=-2012.29[/tex]
So, the expected value after playing 623 times is to -$2012.29, that is, lose $2012.29.
