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A trader can make a profit of $50 with probability 0.3 or a profit of $70 with a probability 0.5 or incur a loss of $40

Posted: Sun Oct 03, 2021 3:31 pm
by answerhappygod
A trader can make a profit of $50 with probability 0.3 or a
profit of $70 with a probability 0.5 or incur a loss of $40 with
probability 0.2. What is the expected gain?