A community for students.

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

anonymous

  • one year ago

PLEASE HELP!!!!!! I can't quite understand how to do this.

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

    The probability distribution of the number of accidents in a week at an intersection, based on past data, is given below. Find the expected number of accidents in one week. Round your answer to the nearest hundredth.

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

    number of accidents (n)| 0 | 1| 2| 3 Probability of n accidents| 0.75| 0.15| 0.08| 0.02

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

    what kinda distribution do ya use?

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

    That's where I am at a loss. I'm not quite sure. I'm getting confused because of the past problems I have been doing

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

    since it is discrete \[E(\text{ accidents in one week })=\sum_{n=0}^{3} n \cdot p(n)\]

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

    probability mass function?

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

    aka also known as mean value

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

    Oh! That makes sense! I was over complicating it again...

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

    have you found the sum of the products that I mentioned?

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

    that is have you computed: 0*.75+1*.15+2*.08+3*.02

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

    Yes, indeed I was working on that. cx

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

    dayum probability magics

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

    for my final answer I got 0.37

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

    ok sounds awesome

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

    that is what I have gotten too

  16. 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.