stat test 3 - Hypothesis testing-procedure for testing a...

Info icon This preview shows pages 1–2. Sign up to view the full content.

View Full Document Right Arrow Icon
Hypothesis testing-procedure for testing a claim about the value of a parameter Level of significance= Power= Trade-off between Three ways to increase power. Increase , decrease variability, increase n Test statistic- standardized version of the obtained data. Critical region- range of values of test statistic for which we reject Ho Critical value- boundary point of this range Statistically significant- test in which we reject Ho p-value- smallest level of significance for which we would reject Ho Sample correlation coefficient- r, is measure of degree of linear relationship b/t two variables in the sample Population correlation coefficient-p, is measure of degree of linear relationship b/t two variables in the population -Accept Ho unless evidence convinces us its false -Draw picture according to Ho, locate critical region according to H1 -If we reject Ho in a two0tail test, our conclusion must indicate the direction of the result -The smaller the p-value, the more sure we are that Ho is wrong -Ignore the sign of t when finding bounds on the p-value -Ho and H1 never depend on the value of X bar - Ask yourself: one tail or 2? =.05 or =.01? given values or S values? Given std. deviations or variances?
Image of page 1

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

View Full Document Right Arrow Icon
Image of page 2
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