The computer output for the multiple regression analysis for Exercise 13.3 provides this...

The computer output for the multiple regression analysis for Exercise 13.3 provides this information:

a. Which, if any, of the independent variables contribute information for the prediction of y?

b. Give the least-squares prediction equation.

d. What is the practical interpretation of the parameter ?

Reference:

Suppose that you fit the model

to 15 data points and found F equal to 57.44.

a. Do the data provide sufficient evidence to indicate that the model contributes information for the prediction of y? Test using a 5% level of significance.

b. Use the value of F to calculate . Interpret its value.