Lesson 6.pdf - Lesson 6 Confidence Intervals for...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
Lesson 6: Confidence Intervals for Proportions Confidence Interval for One Proportion ( ࠵? ) We talked about how to use confidence intervals to draw conclusions about population means. Now we are interested in estimating a population proportion. Recall : For the one sample mean CI, ࠵? was the parameter. For the two sample mean CI, ࠵? ! and ࠵? ! were the parameters. Now we use p to label the parameter. In other words p is the true or the population proportion that we are interested in estimating. For example, proportion of defective items manufactured in a certain factory. P -True proportion of defective items manufactured in the factory Response is a classification : Defectives Vs non-defectives or successes Vs failures, etc. Recall :
Image of page 1

Info iconThis preview has intentionally blurred sections. Sign up to view the full version.

View Full Document Right Arrow Icon
Confidence Interval Formula for p Ø Suppose we randomly sample 1000 items manufactured in that factory and count the number of defectives in the sample. Say there were 300 defectives.
Image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

{[ snackBarMessage ]}

What students are saying

  • Left Quote Icon

    As a current student on this bumpy collegiate pathway, I stumbled upon Course Hero, where I can find study resources for nearly all my courses, get online help from tutors 24/7, and even share my old projects, papers, and lecture notes with other students.

    Student Picture

    Kiran Temple University Fox School of Business ‘17, Course Hero Intern

  • Left Quote Icon

    I cannot even describe how much Course Hero helped me this summer. It’s truly become something I can always rely on and help me. In the end, I was not only able to survive summer classes, but I was able to thrive thanks to Course Hero.

    Student Picture

    Dana University of Pennsylvania ‘17, Course Hero Intern

  • Left Quote Icon

    The ability to access any university’s resources through Course Hero proved invaluable in my case. I was behind on Tulane coursework and actually used UCLA’s materials to help me move forward and get everything together on time.

    Student Picture

    Jill Tulane University ‘16, Course Hero Intern