Question: Im struggling with #26 Problems 19- 24: In a recent experiment to determine the factors affecting tensile strength of steel plates, the MLR tensile strength

Im struggling with #26

Problems 19- 24: In a recent experiment to determine the factors affecting tensile strength of steel plates, the MLR tensile strength (in kg/mm?), the manganese content (in parts per thousand), and the thickness (in mm) were I Summary of Fit measured in a random sample of 20 plates. RSquare 0.86221 RSquare Adj 0.845999 Root Mean Square Error 0.822761 Mean of Response 48.525 Observations (or Sum Wats) 20 Analysis of Variance Sum of DF Squares Mean Square F Ratio 26. What is the fraction of raw variation in tensile strength of steel plates accounted for by manganese Source Model 2 72.009591 36.0048 53.1879 content and thickness? Error 17 11.507909 0.6769 Prob > F C. Total 19 83.517500 I Parameter Estimates Term Estimate Std Error t Ratio Prob>|t] Intercept 26.640804 2723354 9.78 Manganese 3.3201132 0.331976 10.00 <.0001 thickness>

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