On any given day we know a salesman can earn $0 with a 30% probability
On any given day we know a salesman can earn $0 with a 30% probability, $100 with a 20% probability or $300 with 40% probability. His expected earnings equal
A) $0.
B) $140.
C) $300.
D) It cannot be determined from the available information.
ANSWER
B
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