math

A bag contains 2 gold marbles, 6 silver marbles, and 23 black marbles. Someone offers to play this game: You randomly select one marble from the bag. If it is gold, you win $4. If it is silver, you win $2. If it is black, you lose $1.

What is your expected value if you play this game?

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  2. 👎 0
  3. 👁 45
  1. 2/31 * 4 + 6/31 * 2 - 23/31 = -3/31

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    posted by oobleck

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