View the step-by-step solution to:

PROBLEM 2 (10 points) A college wants to know the lower limit of a two-sided 95% confidence interval for SAT scores on the Math section (range equals...

PROBLEM 2 (10 points)

A college wants to know the lower limit of a two-sided 95% confidence interval for SAT scores on the Math section (range equals 200 to 800).

They sampled 400 students and found that the sample mean was 580 and the sample standard deviation was 60.

Top Answer

Here's the explanation you needed for... View the full answer

2 comments
  • This was a very detailed response, thank you so much vectorialcalculus. Your explanation helped me to fully understand where numbers came from and what calculations to use. I really appreciate your help.
    • Alejjandra
    • Apr 01, 2018 at 8:29pm
  • You are welcome Alejjandra.
    • vectorialcalculus
    • Apr 02, 2018 at 2:38am

Sign up to view the full answer

Other Answers

The formula for Confidence Interval CI = xbar ± t alpha/2 * (sd/ Sqrt(n)) Where, xbar = Mean sd =... View the full answer

1 comment
  • Thank you so much for your help :)
    • Alejjandra
    • Apr 01, 2018 at 8:32pm

Why Join Course Hero?

Course Hero has all the homework and study help you need to succeed! We’ve got course-specific notes, study guides, and practice tests along with expert tutors.

-

Educational Resources
  • -

    Study Documents

    Find the best study resources around, tagged to your specific courses. Share your own to gain free Course Hero access.

    Browse Documents
  • -

    Question & Answers

    Get one-on-one homework help from our expert tutors—available online 24/7. Ask your own questions or browse existing Q&A threads. Satisfaction guaranteed!

    Ask a Question
Ask a homework question - tutors are online