Question 1100869
<br>To find an expected value, multiply the probability of each possible outcome by the value of that outcome, and add all those products.<br>
From the player's perspective, there is a .01 probability of winning $500, a .04 probability of winning $100, and a .95 probability of losing $10.  The expected value is then
{{{.01(500)+.04(100)+.95(-10) = 5 + 4 - 9.5 = -0.5}}}<br>
The expected value from the player's perspective is -$0.50.