Chapter 14.3, Problem 10AYU

(a)

To determine

To construct: The correlation matrix between variables.

To determine

To find: Whether multicollinearity exists or not.

To determine

The multiple regression line.

(c)

To determine

To Test: The provided hypothesis.

(d)

To determine

To test: The hypothesis.

To determine

To explain: Whether any variable should be removed from the provided model or not.

(e)

To determine

The regression model after removing $x_1$.

To determine

To test: The hypothesis that at least one regression coefficient out of ${\beta }_2\text{ and }{\beta }_3$ differ from zero or not.

To determine

To test: The hypothesis whether individual coefficient of regression for $x_2\text{and}{x}_3$ significantly differ from 0 or not.