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CBass2015

  • 2 years ago

You are playing a gambling game with a pirate in which you roll two fair six - sided dice. If the sum of the dice is a prime number, then you must walk the plank ... and you can’t swim! If you manage to avoid the plank, there’s a 1/13 chance that the pirate will behead you with his sword. What is the probability that you will survive?

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  1. sourwing
    • 2 years ago
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    did you draw a tree diagram?

  2. sourwing
    • 2 years ago
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    |dw:1394424994403:dw|

  3. sourwing
    • 2 years ago
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    P(survive) = p(~prime) * P(~beheaded | ~prime)

  4. CBass2015
    • 2 years ago
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    Oh I did not. Thanks for the diagram!

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