Solved: Wear resistance of certain nuclear reactor

Chapter 13, Problem 13.4

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Wear resistance of certain nuclear reactor components made of Zircaloy-2 is partly determined by properties of the oxide layer. The following data appears in an article that proposed a new nondestructive testing method to monitor thickness of the layer (Monitoring of Oxide Layer Thickness on Zircaloy-2 by the Eddy Current Test Method, J. of Testing and Eval., 1987: 333336). The variables are x oxide-layer thickness ( m) and y eddy-current response (arbitrary units). a. The authors summarized the relationship by giving the equation of the least squares line as y 20.6 .047x. Calculate and plot the residuals against x and then comment on the appropriateness of the simple linear regression model. b. Use s .7921 to calculate the standardized residuals from a simple linear regression. Construct a standardized residual plot and comment. Also construct a normal probability plot and comment.

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