Maurice Tutor

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Teaching Since: May 2017
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    Argosy University/ Phoniex University/
    Nov-2005 - Oct-2011

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    Phoniex University
    Oct-2001 - Nov-2016

Category > Management Posted 04 Nov 2017 My Price 7.00

amount of natural gas

13.1 Let x be the size of a house (sq ft) and y be the amount of natural gas used (therms) during a specified period. Sup- pose that for a particular community, x and y are related ac- cording to the simple linear regression model with

 

b = slope of population regression line = .017

a = y intercept of population regression line = -5.0

a.  What is the equation of the population regression line?

b. Graph the population regression line by first finding the point on the line corresponding to x = 1000 and then the point corresponding to x = 2000, and drawing a line through these points.

c.    What is the mean value of gas usage for houses with 2100 sq ft of space?

 

 

 

d.    What is the average change in usage associated with a 1-sq-ft increase in size?

e.    What is the average change in usage associated with a 100-sq-ft increase in size?

f.     Would you use the model to predict mean usage for

a 500-sq-ft house? Why or why not? (Note: There are no small houses in the community in which this model is valid.)

Answers

Maurice Tutor
(5)
Status NEW Posted 04 Nov 2017 10:11 PM My Price 7.00

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