View the step-by-step solution to:


Construct the 95% confidence interval for the population mean using the appropriate

distributions for the

three situations below.

a. A random sample of 50 people's body mass index has a mean of 27.7 and a standard.

deviation of 6.12.

b. The average yards per carry among all NFL running backs is 3.1 +/- 1.2 (1 SD). Data for

a random 20 running backs is:

2.8, 3.9, 5.0, 4.4, 3.3, 3.8, 4.8, 4.9, 3.8, 4.2,3.9, 3.6, 4.0, 3.7, 6.0, 7.2, 4.8, 2.9, 5.3, 4.5

c. Random sample of 13 people visiting Hawaii had an average length of stay of 11.3 days with a sample standard deviation of 2.7 day

Top Answer

c) 95% confidence... View the full answer

Sign up to view the full answer

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.

  • -

    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