Nielsen media research wishes to estimate the mean number of hours that high school students spend watching TV on a weekday. A margin of error of 0.3 hour is desired. Past studies suggest that a population standard deviation of 1.8 hours is reasonable. Estimate the minimum sample size required to estimate the population mean with the stated accuracy. (5 points)
Added by Andrea B.
Step 1
Margin of error (E) = 0.3 hours Population standard deviation (σ) = 1.8 hours Confidence level = 95% (since it is not given, we will assume the most common confidence level) Show more…
Show all steps
Close
Your feedback will help us improve your experience
Anna D. and 78 other Intro Stats / AP Statistics educators are ready to help you.
Ask a new question
Labs
Want to see this concept in action?
Explore this concept interactively to see how it behaves as you change inputs.
Key Concepts
Recommended Videos
One researcher wishes to estimate the mean number of hours that high school students spend watching TV on a weekday. A margin of error of 0.28 hour is desired. Past studies suggest that a population standard deviation of 2.3 hours is reasonable. Estimate the minimum sample size required to estimate the population mean with the stated accuracy. The required sample size is ______. (Round up to the nearest whole number.)
Robin C.
Nielsen Media Research wants to estimate the mean amount of time (in hours) that full-time college students spend watching television each weekday. Find the sample size necessary to estimate that mean with a 0.25 h (or 15 min) margin of error. Assume that a 96% degree of confidence is desired. Also assume that a pilot study showed that the standard deviation is estimated to be 1.87 hours.
Joanna Q.
Sri K.
Recommended Textbooks
Elementary Statistics a Step by Step Approach
The Practice of Statistics for AP
Introductory Statistics
Transcript
18,000,000+
Students on Numerade
Trusted by students at 8,000+ universities
Watch the video solution with this free unlock.
EMAIL
PASSWORD