Question: The kinematic viscosity of a certain solvent system depends on the ratio of the two solvents and the temperature. Table B.10 summarizes a set of

The kinematic viscosity of a certain solvent system depends on the ratio of the two solvents and the temperature. Table B.10 summarizes a set of experimental results.

a. Fit a multiple linear regression model relating the viscosity to the two regressors.

b. Test for signifi cance of regression. What conclusions can you draw?

c. Use t tests to assess the contribution of each regressor to the model.

Discuss your fi ndings.

d. Calculate R2 and RAdj 2 for this model. Compare these values to the R2 and RAdj 2 for the simple linear regression model relating the viscosity to temperature only. Discuss your results.

e. Find a 99% CI for the regression coeffi cient for temperature for both models in part

d. Discuss any differences.

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