Chapter 27, Problem 15E

To determine

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

Answer to Problem 15E

  $(-0.0386,-0.0214)$

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.

  $\begin{array}{l}(-0.02996-2\times 0.0043,-0.02996+2\times 0.0043)\\ (-0.0386,-0.0214)\end{array}$