Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

Kazehaya

  • one year ago

Need help with a problem. Just tell me where to go with it; I don't want anyone to solve it for me. Just confused... I tried the counting principle but it didn't work. "Suppose you roll two number cubes and pick a letter of the alphabet at random. Find the probability you roll two even numbers and pick one of the vowels a, e, i, o, or u"

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

    what is the probability of rolling an even number on one of the cubes? What is the probability of choosing one of the vowels? I mean on there own

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

    Probability of choosing an even number on either cube is 1/2, and the probability for choosing a vowel is 5/26. Do I just add them together?

  3. whatisthequestion
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    are they independent events?

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

    ...Yes, I think.

  5. whatisthequestion
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    well they cannot impact each other so they are independent events

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

    right. And the probability for rolling to even numbers is 1/4

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

    two*

  8. whatisthequestion
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    Unfortunately I do not remeber the formula for independent events so I would check you textbook or formula sheet . . . if I had to guess I would say it is multiplying them together so \[\frac{ 1 }{ 2 }*\frac{ 1 }{ 2 }*\frac{ 5 }{ 26 }\]

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

    Let's see...

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

    Ah! That's it. Thanks.

  11. whatisthequestion
    • one year ago
    Best Response
    You've already chosen the best response.
    Medals 1

    yea a quick way to see that it is not adding is that it would give you over 100% chance of success anyways don't forget to close the question

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

    Search OpenStudy
    • 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.