Chapter 27, Problem 16E

To determine

To find the 95% confidence interval for the slope of the regression line.

Answer to Problem 16E

  $(-1088.2083,-829.8835)$

Explanation of Solution

Given:

  

Formula:

Confidence interval for slope is,

  $(Coefficient(b)\mp 2\times S{E}_b)$

Using formula, 95% confidence interval for the slope of the regression line.

  $\begin{array}{l}(-959.0459-2\times 64.5812,-959.0459+2\times 64.5812)\\ (-1088.2083,-829.8835)\end{array}$