11.31 Predicting U.S. movie revenue. The movie Kick-Ass was released during this same time period. It had a budget of $30.0 million and was shown in 3065 theaters, grossing $19.83 million during the first weekend. Use software to construct the following.

  1. (a) A 95% prediction interval based on the model with all three explanatory variables.

  2. (b) A 95% prediction interval based on the model using only opening-weekend revenue and budget.

  3. (c) Compare the two intervals. Do the models give similar predictions and standard errors?