Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

wseekay

  • 2 years ago

Suppose there are three white marbles and three black marbles in a bag and you want to remove two marbles. What is the probability that you will select a white marble and then a black marble? Express your answer as a percent.

  • This Question is Closed
  1. wseekay
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    Thank you :)

  2. emecham
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 2

    yeah 50% because there is an equal amount of marbles

  3. wseekay
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    ok, just wanted to be sure i was right

  4. wseekay
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    thanks!

  5. wseekay
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    :)

  6. phi
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 0

    The problem says you want to remove two marbles. So you do not replace the marble back in the bag. This changes things. probability of getting a white marble on the first pick is # of white / total number = 3/6 =1/2 now there are 5 marbles left in the bag: 2 white and 3 black. Probability of drawing a black marble is 3/5 The probability of getting a white followed by a black is (1/2)*(3/5) = 3/10 or 30%

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

    • Attachments:

Ask your own question

Ask a Question
Find more explanations on OpenStudy

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.