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Home > CCG > Chapter 5 > Lesson 5.2.2 > Problem 5-69

5-69.

A spinner divided into 3 sections. One fourth section is labeled negative $6. Three eighths section is labeled $3. Three eighths section is labeled $5. The probability of winning on the spinner at right is equal to the chance of winning . Find the expected value for one spin. Is this game fair?  

Refer to the Math Notes box in this lesson.

Part of the calculation for the expected value is .

Is the game fair?
That means the amount you win is equal to the amount you lose, or the expected value is .