View the step-by-step solution to:

A health insurer gathers data on the length of hospitalization (in days) of patients operated on for appendicitis. Random samples from two different...

A health insurer gathers data on the length of hospitalization (in days) of patients operated on for appendicitis. Random samples from two different hospitals yielded the following results. Hospital 1: n = 56, mean = 4.2, and standard deviation = 1.6. Hospital 2: n = 38, mean = 5.4 and standard deviation = 1.9.  Find a 90% confidence interval for the difference in mean length of stays for the two hospitals and interpret the result.

Recently Asked Questions

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