Hypothesis test for a two population means_SP2014

Hypothesis test for a two population means_SP2014 - ECO 221...

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

ECO 221, SP 2014 Rollins College Prof. M. Vidovic Hypothesis Test for two Populations Due Wednesday, April 16, 2014 1. In a study of malpractice claims where a settlement has been reached, two random samples were selected: a random sample of 515 closed malpractice claims that were found not to involve medical errors and a random sample of 889 claims that were found to involve errors ( New England Journal of Medicine, 2006 ). The following statement appeared in the referenced paper: “When claims not involving errors were compensated, payments were significantly lower on average than were payments for claims involving errors ($313,205 vs. $521,560, p value=0.004).” a. State the alternative hypothesis (and the associated null) that the researchers have tested in order to reach the stated conclusion. b. Which of the following could have been the value of the test statistic for the hypothesis test? Explain your reasoning. The degrees of freedom are 1402.
Image of page 1

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

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