=+Jayne performs a regression analysis, comparing each month’s advertising expense with that month’s revenue, and obtains the following formula:

Revenue = $47 801 – (1.92 × Advertising expense)

Variable Coefficient Standard error t-Value Constant $47 801.72 7 628.39 6.27 Independent variable 1: Advertising expense –1.92 2.26 –0.85 r 2

= 0.43; Standard error = 10 340.18 Required