Use the following tables to answer Questions 13-14 A multipl…

Use the following tables to answer Questions 13-14 A multiple regression was modeled with one dependent variable Y and 4 independent variables X1, X2, X3, and X4. Below are the regression results of the models of Xi with all the other X variables (i = 1, 2, 3, 4):

Use the following data to answer Questions 6-8 In order to e…

Use the following data to answer Questions 6-8 In order to estimate the relationship between the sales and price of umbrellas we decided to test the following model: Y = β0 + β1X + β2X2 + ε Where, Y = sales (in thousands) and X = price of an umbrella. The data was collected from 30 major stores in Madison downtown and the ANOVA summary follows: