Hydrogen content is conjectured to be an important factorin porosity of aluminum alloy
Chapter 12, Problem 62(choose chapter or problem)
Hydrogen content is conjectured to be an important factorin porosity of aluminum alloy castings. The article The Reduced Pressure Test as a Measuring Tool in the Evaluationof Porosity/Hydrogen Content in A17 Wt Pct Si-10 Vol PctSiC(p) Metal Matrix Composite (Metallurgical Trans.,1993: 18571868) gives the accompanying data on x contentand y gas porosity for one particular measurementtechnique. x .18 .20 .21 .21 .21 .22 .23y .46 .70 .41 .45 .55 .44 .24x .23 .24 .24 .25 .28 .30 .37y .47 .22 .80 .88 .70 .72 .75Minitab gives the following output in response to aCorrelation command:Correlation of Hydrcon anda. Test at level .05 to see whether the population correlationcoefficient differs from 0.b. If a simple linear regression analysis had been carriedout, what percentage of observed variation in porositycould be attributed to the model relationship?
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