View the step-by-step solution to:


5. Assume that weekly screen time follows a normal distribution with a std for 5 hours. During a survey, 125

people were asked about the number of hours they watched the screen during the last week the average answer was 21 hours

A. Based on this survey construct a 95% confidence interval for the weekly number of screen hours

B. What should be the sample size that will ensure that the margin of error will not be higher than 0.5 for a confidence interval of 95%

Top Answer

Answers are a) 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