A researcher collects the data shown at the left and concludes that there is a significant relationship between the amount of radio advertising time (in minutes per week) and the weekly sales of a...

A researcher collects the data shown at the left and concludes that there is a significant relationship between the amount of radio advertising time (in minutes per week) and the weekly sales of a product (in hundreds of dollars). Find the standard error of estimate. Use the regression equation

a. Use a table to calculate the sum of the squared differences of each observed y@ value and the corresponding predicted y@ value.

b. Identify the number n of pairs of data.

c. Calculate se.

d. Interpret the results.