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QUESTION 12 An experiment carried out to study the effect of the mole contents of cobalt (x1) and the calcination temperature (x2) on the surface area of an iron-cobalt hydroxide catalyst (y) resulted in the accompanying data Correlations catalyst cobalt cobalt 0.944 temperature 0.964 0.993 Coefficients Click Save and Submit to save and submit. Click Save All Answers to save all answers. MacBook Pro Coefficients Term Coef SE Coef T-Value P-value Constant 355 213 1.67 0.130 cobalt -49.8 41.0 0.255 temperature 205.2 78.0 2.63 0.027 Analysis of Variance Source DF Adj SS Adj MS F-Value P- Value Click Save and Submit to save and submit. Click Save All Answers to save all answers. MacBook Pro Total 11 34066150 1) The sample correlation coefficient indicates that there is relationship between Temperature and cobalt. 2) Write down the least square regression equation, catalyst (Y)= X1+ X2 (fill in 3) The interpretation of the estimated coefficient of Cobalt (x1) is the blanks using letters a/b/c/d from the list below) a) If the catalyst increases by one unit, the Cobalt decreases by 3,638 on average. Click Save and Submit to save and submit. Click Save All Answers to save all answers. MacBook Pro 23 catalyst (Y)- X1 3) The Interpretation of the estimated coefficient of Cobalt (1) is the blanks using letters a/b/e/d from the list below) ( Tin a) If the catalyst increases by one unit, the Cobalt decreases by 3,638 on average. b) If the catalyst decreases by one unit, the Cobalt increases by 3,638 on average. c) If the Cobalt increases by one unit, the catalyst decreases by 49.8 on average. d) If the catalyst increases by one unit, the Cobalt increases by 49.8 on average. 4) Compute the percent of variability explained by this model (%) (rounded to two decimal places). % (fill in the blanks usina letters 5) Interpretation of the R2 value is Click Save and Submit to save and submit. Click Save All Answers to save all answers. 5) Interpretation of the R? value is a/b/e/d from the list below) ( in the blanks using letters a) Variation in the Cobalt and Temperature explained by the variation in the catalyst. The remaining variation is due to the other factors those are not included in the model. b) Variation in the catalyst explained by the variation in the and Temperature and Cobalt. The remaining variation is due to the other factors those are not included in the model (error). c) The remaining variation explained by the catalyst. d) None of the above. 6) Predict the catalyst when the Temperature is 50 and the Cobalt is 80 Click Save and Submit to save and submit. Click Save All Answers to save all answers. 7) Is the Colbat has an impact on the catalyst at 10% significance level Answer: (yeso) because p-value equal (greater/less) than 8) Fill in the blanks (rounded to 1 decimal) in the coefficients and the ANOVA tables above. QUESTION 12 An experiment carried out to study the effect of the mole contents of cobalt (x1) and the calcination temperature (x2) on the surface area of an iron-cobalt hydroxide catalyst (y) resulted in the accompanying data Correlations catalyst cobalt cobalt 0.944 temperature 0.964 0.993 Coefficients Click Save and Submit to save and submit. Click Save All Answers to save all answers. MacBook Pro Coefficients Term Coef SE Coef T-Value P-value Constant 355 213 1.67 0.130 cobalt -49.8 41.0 0.255 temperature 205.2 78.0 2.63 0.027 Analysis of Variance Source DF Adj SS Adj MS F-Value P- Value Click Save and Submit to save and submit. Click Save All Answers to save all answers. MacBook Pro Total 11 34066150 1) The sample correlation coefficient indicates that there is relationship between Temperature and cobalt. 2) Write down the least square regression equation, catalyst (Y)= X1+ X2 (fill in 3) The interpretation of the estimated coefficient of Cobalt (x1) is the blanks using letters a/b/c/d from the list below) a) If the catalyst increases by one unit, the Cobalt decreases by 3,638 on average. Click Save and Submit to save and submit. Click Save All Answers to save all answers. MacBook Pro 23 catalyst (Y)- X1 3) The Interpretation of the estimated coefficient of Cobalt (1) is the blanks using letters a/b/e/d from the list below) ( Tin a) If the catalyst increases by one unit, the Cobalt decreases by 3,638 on average. b) If the catalyst decreases by one unit, the Cobalt increases by 3,638 on average. c) If the Cobalt increases by one unit, the catalyst decreases by 49.8 on average. d) If the catalyst increases by one unit, the Cobalt increases by 49.8 on average. 4) Compute the percent of variability explained by this model (%) (rounded to two decimal places). % (fill in the blanks usina letters 5) Interpretation of the R2 value is Click Save and Submit to save and submit. Click Save All Answers to save all answers. 5) Interpretation of the R? value is a/b/e/d from the list below) ( in the blanks using letters a) Variation in the Cobalt and Temperature explained by the variation in the catalyst. The remaining variation is due to the other factors those are not included in the model. b) Variation in the catalyst explained by the variation in the and Temperature and Cobalt. The remaining variation is due to the other factors those are not included in the model (error). c) The remaining variation explained by the catalyst. d) None of the above. 6) Predict the catalyst when the Temperature is 50 and the Cobalt is 80 Click Save and Submit to save and submit. Click Save All Answers to save all answers. 7) Is the Colbat has an impact on the catalyst at 10% significance level Answer: (yeso) because p-value equal (greater/less) than 8) Fill in the blanks (rounded to 1 decimal) in the coefficients and the ANOVA tables above
