Math

Evelyn rolled two 1-6 number cubes 72 times. How many times should she predict she will roll a sum of 5?

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asked by Blanca
  1. to get a sum of 5, we could have
    1 4
    2 3
    3 2
    4 1
    so, prob(sumof 5) = 4/36

    expected sum of 5 in 72 tries
    = (4/36)(72) = 8

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    posted by Reiny

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