A US travel data center survey reported that Americans stayed an average of 7.5 night when they went on vacation. The sample size was 1500. Find the 95% confidence interval of the true mean. Assume the population standard deviation was 0.8.
- print Print
- list Cite
Expert Answers
briefcaseTeacher (K-12)
calendarEducator since 2011
write3,063 answers
starTop subjects are Math, Science, and Business
We are asked to create the 95% confidence interval for the mean number of nights that people stayed for vacation. We are told that the sample size was 1500, and the sample mean is 7.5. We are also told to assume that the population standard deviation is 0.8.
When creating the interval about a mean realize that what we are doing is taking some point estimate and adding/subtracting a term encompassing possible errors. There are two primary components of this error term: one factor involves how confident we want to be, and the other factor is the standard error of the mean.
- The point estimate: a point...
(The entire section contains 318 words.)
Unlock This Answer Now
Start your 48-hour free trial to unlock this answer and thousands more. Enjoy eNotes ad-free and cancel anytime.
Related Questions
- n=200, x=40, 95%confidence Use the sample data and confidence level to construct the confidence...
- 1 Educator Answer
- What happens to the confidence interval if you increase the sample size?
- 1 Educator Answer
- n=2000,x=400, 95% confidenceUse the sample data and confidence level to construct the confidence...
- 1 Educator Answer
- find a confidence interval for estimating the population mean µ. The confidence level is 95% and...
- 1 Educator Answer
- For the following estimate confidence interval for population mean with confidence level 90%....
- 1 Educator Answer