Which of the following statements is false? In a multiple regression model, the t-stat for each independent variable indicates the goodness of fit for the overall model It is possible to have a multiple regression model with a strong R2 even though an individual cost driver may not be making a significant contribution to the model The slope of the cost estimation model indicates the rate of change in the dependent variable with a unit change in the independent variable A cost estimation model using the high-low method will almost always produce a different intercept & slope compared to a regression model