A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

help!

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

    @welshfella

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

    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

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

    @welshfella

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

    @welshfella

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

    @iambatman

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

    please help! :((((

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

    120?

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

    probability of choosing a red marble = 8 /50 because the number of marbles in bag = 8 and total number of all marbles = 50

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

    so number of marbles expected in 500 trials is |dw:1439322127297:dw|

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

    divide 500 by 50 then multiply the answer by 8

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

    i got 80

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

    @welshfella

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

    @Michele_Laino

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

    yay! your back

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

    80 is correct

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

    yay!

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

    hold on please, i have more @welshfella

  18. 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.