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00:57:32 Jim likes to day-trade on the Internet. On a good day, he averages a $1200 gain. On a bad day, he averages a

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00:57:32 Jim likes to day-trade on the Internet. On a good day, he averages a $1200 gain. On a bad day, he averages a $900 loss. Suppose that he has good days 30 % of the time, bad days 50% of the time, and the rest of the time he breaks even. What is the expected value for one day of Jim's day- trading hobby?

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