In Order to Determine Whether or Not the Sales Volume

question 111

Essay

In order to determine whether or not the sales volume of a company (Y in millions of dollars) is related to advertising expenditures (X₁ in millions of dollars) and the number of salespeople (X₂), data were gathered for 10 years. Part of the regression results is shown below.
a. Use the above results and write the regression equation that can be used to predict sales.
b. Estimate the sales volume for an advertising expenditure of 3.5 million dollars and 45 salespeople. Give your answer in dollars.
c. At  = 0.05, test to determine if the fitted equation developed in Part a represents a significant relationship between the independent variables and the dependent variable.d. At  = 0.05, test to see if 1 is significantly different from zero.
e. Determine the multiple coefficient of determination.
f. Compute the adjusted coefficient of determination.

---

Definitions:

Finally Block

A block of code in certain programming languages that is executed after a try block, regardless of whether an exception was thrown or caught.

Last Catch Block

The final block in a series of try-catch statements in programming that catches any remaining uncaught exceptions.

Checked Exception

In Java, a type of exception that is checked at compile-time for a smooth execution of the program and must be either caught or declared in the method's throws clause.

Class Object

In object-oriented programming, a class object is an instance of a class, where the class provides a blueprint or template that defines the properties and behaviors of the objects.