11.29 Predicting movie revenue—multiple linear regression. Now consider fitting a model using all the explanatory variables.

  1. (a) Write out the statistical model for this analysis, making sure to specify all assumptions.

  2. (b) Run the multiple regression model and specify the fitted regression equation.

  3. (c) Obtain the residuals from part (b) and check assumptions. Comment on any unusual residuals or patterns in the residuals.

  4. (d) What percent of the variability in USRevenue is explained by this model?