On any given day, a salesman can earn $0 with a 30% probability, $100
On any given day, a salesman can earn $0 with a 30% probability, $100 with a 20% probability, or $300 with a 50% probability. His expected earnings equal
A) $0.
B) $100.
C) $150.
D) $170.
ANSWER
D
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