A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

The number of marbles of different colors stored in a hat is listed below: 1 red marble 8 green marbles 9 blue marbles Without looking in the hat, Ray takes out a marble at random. He replaces the marble and then takes out another marble from the hat. What is the probability that Ray takes out a blue marble in both draws? 1 /9 1 / 8 1 / 4 1/2

  • This Question is Closed
  1. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    @Vocaloid

  2. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1/2

  3. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Add the probabilities together, what do you get?

  4. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Since there are 9 blue marbles and that's half as many marbles in the bag

  5. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    almost, but not quite I agree that the probability of getting one blue marble is 1/2 however, the problem is asking for two marbles, so we multiply (1/2)*(1/2) = ?

  6. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    0.25

  7. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    as a fraction, please

  8. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    1/4

  9. Vocaloid
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 2

    yup, that's our final answer

  10. anonymous
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thanks!

  11. Not the answer you are looking for?
    Search for more explanations.

    • Attachments:

Ask your own question

Sign Up
Find more explanations on OpenStudy
Privacy Policy

Your question is ready. Sign up for free to start getting answers.

spraguer (Moderator)
5 → View Detailed Profile

is replying to Can someone tell me what button the professor is hitting...

23

  • Teamwork 19 Teammate
  • Problem Solving 19 Hero
  • You have blocked this person.
  • ✔ You're a fan Checking fan status...

Thanks for being so helpful in mathematics. If you are getting quality help, make sure you spread the word about OpenStudy.

This is the testimonial you wrote.
You haven't written a testimonial for Owlfred.