Question 126400
Let's say your random variable is "gain"
Values of the random variable are : 100 , 50, 50, -2
Corresponding probabilitis are....: 1/500,1/500,1/500,499/500
Multiplying corresponding parts and adding you get:
100*(1/500) + 50(1/500) + 50(1/500) - 2(499/500)
= -1.596
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Cheers,
Stan H.