1 / 7

Confidence Interval

In a sample of 56 students, 32 said they plan to go to college. Find the 92% confidence interval of the proportion of students who plan to go to college. Confidence Interval. Sample Size. Standard Error. It’s the estimated standard deviation of the statistic.

sharis
Télécharger la présentation

Confidence Interval

An Image/Link below is provided (as is) to download presentation Download Policy: Content on the Website is provided to you AS IS for your information and personal use and may not be sold / licensed / shared on other websites without getting consent from its author. Content is provided to you AS IS for your information and personal use only. Download presentation by click this link. While downloading, if for some reason you are not able to download a presentation, the publisher may have deleted the file from their server. During download, if you can't get a presentation, the file might be deleted by the publisher.

E N D

Presentation Transcript


  1. In a sample of 56 students, 32 said they plan to go to college. Find the 92% confidence interval of the proportion of students who plan to go to college.

  2. Confidence Interval Sample Size

  3. Standard Error • It’s the estimated standard deviation of the statistic

  4. An article by the right to die organization gave a proportion of physician’s who agree with their cause. I want to test their claim. I want to be within 0.05 with 95% confidence, how many must I sample? (Assume p = 0.5)

  5. Why did I let p = 0.5? If proportion is not given, use p = 0.5 because it’s including the most error. (Let n = 100)

  6. A pollster wishes to estimate the proportion of U.S. voters who favor capital punishment. How large a sample is needed in order to be 95% confident that the sample proportion will not differ from the true proportion by more than 2%?

  7. Homework • Worksheet

More Related