2019 AP Statistics #5 - FRQ Solution - Released Free Response Question - Probability Expected Value

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[@Awesome-dr7gk]

Wouldn’t you not have to multiply the +50 by a probability? Because there is 100% chance that they will make 50 dollars because of the purchase, there’s a chance that they will lose money, which is what we calculate and then use to get our expected value by subtracting it from 50

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