Stat 311 Chapter 11.1 Hypothesis Test and Estimation for a Single Population Variance.pptx - Hypothesis Tests and Estimation for Population Variances

Stat 311 Chapter 11.1 Hypothesis Test and Estimation for a Single Population Variance.pptx

This preview shows page 1 - 9 out of 12 pages.

11-1 Hypothesis Tests and Estimation for Population Variances
Image of page 1
11-2 11.1 Hypothesis Tests and Estimation for a Single Population Variance When measuring variation, the standard deviation is used as the measure because it is measured in the same units as the mean There is no statistical test directly tests the standard deviation The chi-square test that can be used to test the population variance
Image of page 2
Hypothesis for a Single Population Variance 11-3
Image of page 3
Hypothesis for a Single Population Variance 11-4
Image of page 4
Chi-Square Test for a Single Population Variance 11-5
Image of page 5
Finding the Critical Value The critical value, , is found from the chi-square table 11-6 Do not reject H 0 Reject H 0 2 2 2
Image of page 6
Hypothesis Tests for a Single Population Variance 11-7 Hypothesis Tests for Population Variance Don’t reject H 0 Reject H 0 2 Don’t reject H 0 Don’t reject H 0 Reject H 0 Reject H 0 2 2 Reject H 0 2 2 1 /2 2 / 2 2 1
Image of page 7
Hypothesis Tests for a Single Population Variance 11-8
Image of page 8
Image of page 9

You've reached the end of your free preview.

Want to read all 12 pages?

  • Fall '15

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

Stuck? We have tutors online 24/7 who can help you get unstuck.
A+ icon
Ask Expert Tutors You can ask You can ask You can ask (will expire )
Answers in as fast as 15 minutes
A+ icon
Ask Expert Tutors