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The article “Use of Taguchi Methods and Multiple

Statistics for Engineers and Scientists | 4th Edition | ISBN: 9780073401331 | Authors: William Navidi ISBN: 9780073401331 38

Solution for problem 14E Chapter 9.3

Statistics for Engineers and Scientists | 4th Edition

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Statistics for Engineers and Scientists | 4th Edition | ISBN: 9780073401331 | Authors: William Navidi

Statistics for Engineers and Scientists | 4th Edition

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Problem 14E

The article “Use of Taguchi Methods and Multiple Regression Analysis for Optimal Process Development of High Energy Electron Beam Case Hardening of Cast Iron” (M. Jean and Y. Tzeng, Surface Engineering, 2003:150–156) describes a factorial experiment designed to determine factors in a high-energy electron beam process that affect hardness in metals. Results for two factors, each with three levels, are presented in the following table. Factor A is the travel speed in mm/s, and factor B is accelerating voltage in volts. The outcome is Vickers hardness. There were six replications for each treatment. In the article, a total of seven factors were studied; the two presented here are those that were found to be the most significant.

                   

a. Estimate all main effects and interactions.

b. Construct an ANOVA table. You may give ranges for the P-values.

c. Is the additive model plausible? Provide the value of the test statistic and the P-value.

d. Can the effect of travel speed on the hardness be described by interpreting the main effects of travel speed? If so, interpret the main effects, using multiple comparisons at the 5% level if necessary. If not, explain why not.

e. Can the effect of accelerating voltage on the hardness be described by interpreting the main effects of accelerating voltage? If so, interpret the main effects, using multiple comparisons at the 5% level if necessary. If not, explain why not.

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Week 7 Person Centered Approaches Client and Person­Centered Therapies Carl Rogers ­ Emphasized the decision a client was to make belonged only to that client. ­ Personal growth is from the inside outward. ­ Broadly categorized as an existential approach ­ Emphasized the conscious ­ Most important ideas o Respect the person o Adopt a non­directive approach  Allow the client to guide the direction of therapy o Many possible realities (very post­modern in belief) o If personal reality is accepted, growth will occur Key Rogerian Concepts ­ Criticism ­ accept all human behavior ­ Rogers’ rebuttal o “I find it significant that when individuals are prized as persons, the values

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Chapter 9.3, Problem 14E is Solved
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Textbook: Statistics for Engineers and Scientists
Edition: 4
Author: William Navidi
ISBN: 9780073401331

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