8 ho rho 0 no correlation ha rho 0 is positive

Info icon This preview shows pages 28–29. Sign up to view the full content.

8. Ho: Rho = 0 (no correlation) Ha: Rho > 0 (is positive correlation) CLAIM Assumptions: Two quantitative ordered pair data sets Random N =40 > 30 Histogram of residuals was nearly normal Histogram centered close to zero Residual plot showed an even spread pattern One possible outlier. Do not think it is influential though because the r value was still strong (close to 1) Data did have a linear trend (r =0.8) P-value < 0.0001 Unlikely to happen by random chance Pvalue < sig level Reject Ho There is sig sample evidence to support the claim that there is positive correlation between the weight and BMI of men. 9. Ho: mu1 = mu2 = mu3 Ha: at least one is not equal (CLAIM) Quantitative data Random
Image of page 28

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

n>30 or nearly normal similar variances Groups are supposed to be independent (fails this one) F test stat = 4.7 (variance between groups is sig higher than the variance within groups) Pvalue = 0.012 (unlikely to happen by random chance) Reject Ho because P-value < sig level If this problem had met assumptions, then we would have sig evidence to support the claim that the average height of daughters, mom and grandmothers are different.
Image of page 29
This is the end of the preview. Sign up to access the rest of the document.
  • Fall '17
  • Statistics, Statistical hypothesis testing, significant sample evidence

{[ 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