Quantcast

Got Homework?

Connect with other students for help. It's a free community.

  • across
    MIT Grad Student
    Online now
  • laura*
    Helped 1,000 students
    Online now
  • Hero
    College Math Guru
    Online now

Here's the question you clicked on:

55 members online
  • 0 replying
  • 0 viewing

kitty159 Group Title

The scatter diagram of SAT verbal and math scores in a state is roughly football shaped, and the correlation is 0.65. A student is on the 90th percentile of verbal scores. Find the regression estimate of this student’s percentile rank in math.

  • one year ago
  • one year ago

  • This Question is Closed
  1. amistre64 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    http://omega.albany.edu:8008/mat108dir/exam2-prep/prank-m2h.html i think this might be helpful fo rthis

    • one year ago
  2. amistre64 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    i cant seem to work out the steps :/ but does any of it sound familiar? or were you thinking a different method?

    • one year ago
  3. kitty159 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    got the 90th percentile for thA student is on the 40th percentile of verbal scores. Find the regression estimate of this student’s percentile rank in math.is question it is 79.75 but I am stuck with the 40th percentile i.e mt answer for this is

    • one year ago
  4. amistre64 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    z score for .9000 is what, 1.28 1.28 * .65 = .832 a zscore of 0.83 gives a percent near 79.7%

    • one year ago
  5. amistre64 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    not sure i understand that last post

    • one year ago
  6. kitty159 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    I got 79.75 as the answer for 90th percentile. I have the problem working out percentiles and need the formula to work out this I am now looking at the 40th percentile for the same question.

    • one year ago
  7. amistre64 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    im not sure the formula, i have to use a table

    • one year ago
  8. kitty159 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    High were can I find this table I have sat working it out would be helpful if you can let me know where I can get a copy of the table

    • one year ago
  9. amistre64 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    a have a ztable that starts at z=0; percentile = 50 since the z is mirrored along a normal curve, percentile of 40 is the negavite of 60 z60 = 0.25 ; z40 = -0.25

    • one year ago
  10. amistre64 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    http://4.bp.blogspot.com/_5u1UHojRiJk/TEh9BHxxPUI/AAAAAAAAAIQ/DafeQNMYFoE/s1600/ztable.gif ztable -.25*.65 = -.1625, or a zscore of about -.16

    • one year ago
  11. amistre64 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    -.16 is equal to .16, -50 so about 6.4%

    • one year ago
  12. amistre64 Group Title
    Best Response
    You've already chosen the best response.
    Medals 1

    im not sure im doing it correctly tho :/

    • one year ago
  13. kitty159 Group Title
    Best Response
    You've already chosen the best response.
    Medals 0

    ok got it found a table was guessing these

    • one year ago
    • Attachments:

See more questions >>>

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.