For which one of the following distances would using the regression equation result in extrapolation?

MATLAB: An Introduction with Applications
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ISBN:9781119256830
Author:Amos Gilat
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Chapter1: Starting With Matlab
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  1. Data is collected on the distance of several hikes (in miles), along with the amount of time (in minutes) the hike is expected to take. All hikes in the data set are between 0.5 miles and 10 miles long, and the relationship between distance and time is linear and strong.   The regression equation to predict time based on distance is as follows:  Predicted time =   –266 + 31.48 (distance).  Suppose we want to use the regression equation to predict the time it takes to complete a particular hike.  For which one of the following distances would using the regression equation result in extrapolation?  

 

  1. 1 mile
  2. 4.5 miles
  3. 6.8 miles
  4. 9 miles
  5. None of the above distances would result in extrapolation.
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