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Expected value with calculated probabilities

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Laila is playing a game where there are 4 blue markers and 6 red markers in a box. She is going to pick 3 markers, and replace each marker immediately after she picks it.
If she picks all 3 red markers, she will win a total of dollar sign, 400. If the first 2 markers she picks are blue, she will win a total of dollar sign, 300. Under any other outcome, she will win dollar sign, 0.
What is the expected value of Laila's winnings?
Round your answer to the nearest cent.
dollar sign
  • Your answer should be
  • an integer, like 6
  • an exact decimal, like 0, point, 75
  • a simplified proper fraction, like 3, slash, 5
  • a simplified improper fraction, like 7, slash, 4
  • a mixed number, like 1, space, 3, slash, 4