Engineer Studied Effect Four Variables Dimensionless Factor Used Describe Pressure Drops S Q35398962
An engineer studied the effect of four variables on adimensionless factor used to describe pressure drops in ascreen-plate bubble column. Table B.9 summarizes the experimentalresults.
a. Fit a multiple linear regression model relating thisdimensionless number to these regressors.
b. Test for significance of regression. What conclusions can youdraw?
c. Use t tests to assess the contribution of each regressor tothe model. Discuss your findings.
d. Calculate R2 and R2Adj 2 forthis model. Compare these values to the R2 andR2Adj 2 for the multiple linear regressionmodel relating the dimensionless number to x2 and x3. Discuss yourresults.
e. Find a 99% CI for the regression coefficient for x2 for bothmodels in part and discuss any differences.
(need the R-CODES and OUTPUTS also)
TABLE B.9 Pressure Drop Data TABLE B.9 (Continued) y: Dimensionless factor for the pressure drop through a bubble cap Superficial fluid velocity of the gas (crn/s) Kinematic viscosity x: Mesh opening (cm) x4: Dimensionless number relating the superficial fluid velocity of the gas to the superficial fluid velocity of the liquid Source: “A Correlation of Two-Phase Pressure Drops in Screen-plate Bubble Column,” by C.H. Liu, M Kan, and B.H. Chen, Canadian Journal of Chemical Engineering. 71, 460-463. 83-55 55 55 55 34 34 34 34 34 34 34 34 34 2 544-11 .1 56 56 56 56 220 3 111000000000000000000111000000000000000000000000 004 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 34 2 2 2 2 34 34 34 34 34 34 34 34 34 34 34 34 0000000000002222222 2 2 2 2 2 2 1 1 1 1 2 2 2 2 2 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 0 Show transcribed image text