IEE380Summer09Q12_Solutions

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

Info iconThis 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
Background image of page 1

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

View Full DocumentRight 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
Background image of page 2
Image of page 3
This is the end of the preview. Sign up to access the rest of the document.

This note was uploaded on 12/11/2009 for the course CSE IEE taught by Professor Chattin during the Summer '09 term at ASU.

Page1 / 4

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

This preview shows document pages 1 - 3. Sign up to view the full document.

View Full Document Right Arrow Icon
Ask a homework question - tutors are online