math question

How do i solve a problem like this?
I took a study guide and i messed up on some problems so can i get some help on a few that i missed so i can know how to complete them??

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asked by matt
  1. A problem like this???

  2. whoops here it is

    from a barrel of colored marbles,you randomly select 6 blue,4 yellow,2 red,3 green,and 5 purple marbles.Find the experimental probability of randomly selecting a marble that is not yellow. A.2/9 B.4/5 C.6/9 D.10/19

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    posted by matt
  3. What do you think?

  4. the probability of selecting a yellow is 4/20 because there were four yellow out of 20 draws. However, to get the probability of NOT selecting a yellow, it is all the other draws that total 16 out of 20. so 16/20 which reduces to 4/5 which is .8 probability of selecting a marble that is not yellow. hope this helps.

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    posted by Karen

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