Chapter 9.3, Problem 12P

(a)

To determine

Verify the values of ${\displaystyle \sum x}$, ${\displaystyle \sum x^2}$, ${\displaystyle \sum y}$, ${\displaystyle \sum y^2}$, ${\displaystyle \sum xy}$ and r.

(b)

To determine

Check whether the claim $\rho >0$ is significant or not.

(c)

To determine

Verify the values of $S_e$, a, b, and $\overline{x}$.

(d)

To determine

Find the predicted size of the hunting region for an extended pack of 42 wolves.

(e)

To determine

Find the 85% confidence interval for predicted size of the hunting region for an extended pack of 42 wolves.

(f)

To determine

Check whether the claim $\beta >0$ is significant or not.

(g)

To determine

Find a 95% confidence interval for $\beta$.

Interpret the confidence interval.