Chapter 11.4, Problem 12P

(a)

To determine

To test: The verification of ${\displaystyle \sum x=252},{\displaystyle \sum y=59.86,{\displaystyle \sum x^2=16894,{\displaystyle \sum y^2=787.0194}}},$

${\displaystyle \sum xy=3527.87,r\approx \mathrm{0.9405.}}$

(b)

To determine

To test: The claim that $\rho >0$ at 0.01 level of significance.

(c)

To determine

To test: The verification of $S_e\approx 1.6453,a\approx 5.8309,b\approx 0.12185$

(d)

To determine

To find: The predicted size of the hunting region for an extended pack of 42 wolves.

(e)

To determine

To find: The85% confidence interval for $y$ when $x=42$.

(f)

To determine

To test: The claim that $\beta >0$ at 0.01 level of significance.