Quantcast

A community for students. Sign up today!

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

gandalfwiz

  • 2 years ago

Who wants to find the probability of winning the lottery ;D ! Okay, so in a quick draw game, you have to choose 4 numbers, anywhere from 1-80 (but no repeats-- you can't choose 11 twice). The order of the number doesn't matter. Ten numbers will be called out, and if all four of your numbers are in there, you get the grand prize; if three of your numbers are there, you get the second place prize, and if two of your numbers are there, you still get a prize. Find the probability of winning anything.

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

    I know that it should come out to 1:3.86, but I don't know how to find that.

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

    I imagine white ping pong balls, labeled 1 through 80. Now randomly choose 4 of them and mark them red. The problem nows sounds like what is the probability of choosing 4 red balls from a population of 76 white balls and 4 red balls, using 10 draws. added to prob of choosing 3 red balls plus prob of choosing 2 red balls You can use http://en.wikipedia.org/wiki/Hypergeometric_distribution#Definition but I do not get 1: 3.86

  3. 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.