Quantcast

A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

ViennaJade

  • 2 years ago

Approximately 15% of peole are left-handed. If two people are selected at random, what is the probability of the following events? P(At least one is right-handed)? Is this correct? 1-P(none are RH) so..1-P(LH and LH) 1-(.85)(.85) =1-.7225 =.2775...is this correct?

  • This Question is Closed
  1. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    should we assume that people can either be left or right handed, but not both?

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

    well I guess it's possible to be both

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

    but I've never had a question ask me that...

  4. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    since no stats are given as to ambidextrous peoples ... P(l) = .15, P(r) = .85 at least one is P(l) lr + ll

  5. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    at least one is right handed that is .... lr + rr

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

    Thank you! that makes sense.

  7. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    the possible ways to choose 2 people are: ll .15*.15 lr .15*.85 rl .85*.15 rr .85*.85 at least 1 r in it is: lr + rl + rr does that sound right?

  8. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    1 - ll :) .9775

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

    yes it does. makes so much more sense. Thank you!

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

    wait so is the answer .85?

  11. amistre64
    • 2 years ago
    Best Response
    You've already chosen the best response.
    Medals 1

    ll+lr+rl+rr = 1 lr+rl+rr = 1 - ll since l = .15 ... 1 - .15^2 = .9775

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

    oh sorry I forgot the one part..thank you!

  13. 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.