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4.2 Exercise 6

Avg difficulty 2.5

Suppose you play a game with a spinner. You play each game by spinning the spinner once. P(red) = 2 5 \frac{2}{5}, P(blue) = 2 5 \frac{2}{5}, and P(green) = 1 5 \frac{1}{5}. If you land on red, you pay $10. If you land on blue, you don't pay or win anything. If you land on green, you win $10. Complete the following expected value table.

x P(x)
Red – 20 5 – \frac{20}{5}
Blue 2 5 \frac{2}{5}
Green 10

OpenStax Statistics, 4.2 Mean or Expected Value and Standard Deviation, exercise 6

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