anonymous
  • anonymous
A bag contains 50 marbles, 10 of which are blue, 8 are red, 20 are green, and 12 are purple. Marcie takes a marble out of the bag, records the color, and returns it to the bag. How many red marbles should she expect after 500 trials? 80 100 120 200
Mathematics
  • Stacey Warren - Expert brainly.com
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SOLVED
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jamiebookeater
  • jamiebookeater
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anonymous
  • anonymous
@TheSmartOne
AbdullahM
  • AbdullahM
Welcome to Openstudy! @liana1026 So what is the probability that we can select 1 red marble?
anonymous
  • anonymous
100?

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AbdullahM
  • AbdullahM
No, it should be a fraction. \(\sf\large Probability ~of~ picking~ a ~red~ marble = \frac{Number~of~Red~marbles}{Number~of~total~marbles}\)
anonymous
  • anonymous
Okay so 8 red and there are 50 total
anonymous
  • anonymous
i dont understand proabablitly
AbdullahM
  • AbdullahM
ok we have that as: \(\sf\Large \frac{8}{50}\) Multiply that by 500
AbdullahM
  • AbdullahM
8/50 is the probability of getting 1 red marble. So to find out for 500 marbles, we have to multiply by 500.
anonymous
  • anonymous
80 ???
AbdullahM
  • AbdullahM
correct :D
anonymous
  • anonymous
Thank u sooo much

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