For Exercises 15–24, use the data and the regression equations that you calculated in the Section 13.1 exercises.

Question 13.96

18. Video game Sales. For the data from Exercise 42 in Section 13.1, do the following:

  1. Predict the population mean total sales for a game that has been on the top 30 list for 20 weeks.
  2. Construct a 99% confidence interval for the population mean total sales for all games that have been on the top 30 list for 20 weeks.