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Mathematics 13 Online
OpenStudy (anonymous):

The spinner on a wheel of fortune can land with an equal chance on any one of ten regions. Three regions are red, four are blue, two are yellow, and one is green. A player wins $4 if the spinner stops on red and $2 if it stops on green. The player loses $1 if it stops on blue and $5 if it stops on yellow. What is the expected value rounded to the nearest cent?

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