# Question: Continuing Problem 22 suppose that one of the managers of

Continuing Problem 22, suppose that one of the managers of this regional express delivery service company is trying to decide whether to add an interaction term involving the package weight (X1) and the distance shipped (X2) in the previous multiple regression equation.

a. Why would the manager want to add such a term to the regression equation?

b. Estimate the revised equation using the data given in the file P10_22.xlsx.

c. Interpret each of the estimated coefficients in your revised equation. In particular, how do you interpret the coefficient for the interaction term in the revised equation?

d. Does this revised equation fit the data better than the original multiple regression equation? Explain why or why not.

a. Why would the manager want to add such a term to the regression equation?

b. Estimate the revised equation using the data given in the file P10_22.xlsx.

c. Interpret each of the estimated coefficients in your revised equation. In particular, how do you interpret the coefficient for the interaction term in the revised equation?

d. Does this revised equation fit the data better than the original multiple regression equation? Explain why or why not.

## Relevant Questions

Many companies manufacture products that are at least partially produced using chemicals (e.g., paint, gasoline, and steel). In many cases, the quality of the finished product is a function of the temperature and pressure at ...The file P10_44.xlsx contains data that relate the unit cost of producing a fuel pressure regulator to the cumulative number of fuel pressure regulators produced at an automobile production plant. For example, the 4000th ...The file P03_55.xlsx lists the average salary for each Major League Baseball (MLB) team from 2004 to 2009, along with the number of team wins in each of these years.a. Rearrange the data so that there are four long columns: ...In the 1994 congressional election, the Republican candidate outpolled the Democratic candidate by 400 votes (excluding absentee ballots). The Democratic candidate outpolled the Republican candidate by 500 absentee votes. ...In a study published in 1985 in Business Horizons, Platt and McCarthy employed multiple regression analysis to explain variations in compensation among the CEOs of large companies. Their primary objective was to discover ...Post your question