spr05_ex1 - STA 6127 Exam 1 Spring 2005 PRINT NAME The...

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

View Full Document Right Arrow Icon
STA 6127 – Exam 1 – Spring 2005 PRINT NAME__________ The following 3 problems are based on the following information A lacrosse coach is interesting in comparing 3 brands of lacrosse helmets before choosing a brand for her college team. She has researchers in her college’s medical school measure the shock absorption of each brand based on 8 replicates per brand. They report the following means and standard deviations for the experiment (low measurements are better, implying stronger shock absorption): Brand Mean S.D. A 8.0 2.0 B 11.0 3.0 C 11.0 2.0 1. Give the between brand sum of squares. 2. Give the within brand sum of squares: 3. The minimum significant difference based on Bonferroni’s method is B ij =2.72 . What can she say about the true means with an experimentwise error rate of α E =0.05? Note that we obtain B ij as: 72 . 2 1 1 ^ ), 2 ( 3 / 05 . 0 = + = - j i g N ij n n t B σ a) Brand A is better than B and C, B and C are not significantly different. b) Cannot conclude that any of the brands are significantly different c) Brand A is worse than B and C, B and C are not significantly different 4. One-Way ANOVA provides relatively more evidence that: H 0 : μ 1 =...=μ g is false when: a)
Image of page 1

Info iconThis 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.
  • Spring '08
  • Mukherjee
  • Statistical hypothesis testing, researcher, Household income in the United States, shock absorption, following predictor variables

{[ 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