IEE380Summer09Q12_Solutions

IEE380Summer09Q12_Solutions - IEE 380 Summer 2009 Quiz#12A...

Info icon This preview shows pages 1–3. Sign up to view the full content.

View Full Document Right Arrow Icon
IEE 380 Summer 2009 Name: _____________________________ Quiz #12A An article in the Materials Research Bulletin (Vol. 26, No. 11, 1991) reported a study of four different methods of preparing the superconducting compound PbMo 6 S 8 . The authors contend that the method of preparation affects the material’s superconducting transition temperature, T e . Five observations of T e (degrees Kelvin) were taken for each method. The data are: Is there evidence to show that the temperature is affected by method? Show the null and alternative hypotheses and state your conclusion using data from the following Excel printout of the analysis: H 0 : Preparation method does not affect temperature H 1 : Preparation method affects temperature We reject H 0 because the p-value, 6.95E-05 is very, very small. There is evidence that preparation method DOES affect temperature. Preparation Method 1 2 3 4 14.8 14.6 12.7 14.2 14.8 15 11.6 14.4 14.7 14.9 12.4 14.4 14.8 14.8 12.7 12.2 14.9 14.7 12.1 11.7 Anova: Single Factor SUMMARY Groups Count Sum Average Varian ce 1 5 74 14.8 0.005 2 5 74 14.8 0.025 3 5 61.5 12.3 0.215 4 5 66.9 13.38 1.742 ANOVA Source of Variation SS df MS F P- value F crit Between Groups 22.124 3 7.37466 7 14.8458 3 6.95E- 05 3.23887 2 Within Groups 7.948 16 0.49675
Image of page 1

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

View Full Document Right Arrow Icon
IEE 380 Summer 2009 Name: _____________________________ Quiz #12B An article in the Materials Research Bulletin (Vol. 26, No. 11, 1991) reported a study of four different methods
Image of page 2
Image of page 3
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