The owner of Showtime Movie Theaters, Inc., used multiple regression analysis to predict gross revenue (y) as a function of television advertising ( 1) and newspaper advertising (@2). Values of y, 1, and 2 are expressed in thousands of dollars. Click on the datafile logo to reference the data. DATA file Weekly Gross Television Newspaper Revenue Advertising Advertising ($1000s) ($1000s) ($1000s) 96 5.0 1.5 90 2.0 2.0 95 4.0 1:5 92 2.5 2.5 95 30 3.3 94 3.5 2.3 94 2.5 4:2 94 3.0 The estimated regression equation was y = 83.23 + 2.2921 + 1.30x2 a. What is the gross revenue expected for a week where $3,500 is spent on television (x1 - 3.5) and $1,800 is spent on newspaper advertising (x2 = 1.8) (to 3 decimals)? thousand b. Provide a 95%% prediction interval for next week's revenue, assuming that the advertising expenditures will be allocated as in part (a) (to 2 decimals). ($ thousand, $ thousand )