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11.118 Energy efficiency of buildings. Firms conscious of the energy efficiency of proposed new structures are interested in the relation between yearly energy consumption and the num- ber of square feet of building shell. The table (next page) lists the energy consumption in British thermal units (a BTU is the amount of heat required to raise 1 pound of wa- ter 1°F) for 22 buildings that were all subjected to the same climatic conditions. Consider a straight-line model relating BTU consumption, y, to building shell area, x. a. Find the least squares estimates of the intercept B and the slope B. b. Investigate the usefulness of the model you developed in part a. Is yearly energy consumption positively lin- early related to the shell area of the building? Test using a- .10. e. Find the observed significance level of the test of part b. Interpret its value. BTU

11.118 Energy efficiency of buildings. Firms conscious of the energy efficiency of proposed new structures are interested in the relation between yearly energy consumption and the num- ber of square feet of building shell. The table (next page) lists the energy consumption in British thermal units (a BTU is the amount of heat required to raise 1 pound of wa- ter 1°F) for 22 buildings that were all subjected to the same climatic conditions. Consider a straight-line model relating BTU consumption, y, to building shell area, x. a. Find the least squares estimates of the intercept B and the slope B. b. Investigate the usefulness of the model you developed in part a. Is yearly energy consumption positively lin- early related to the shell area of the building? Test using a- .10. e. Find the observed significance level of the test of part b. Interpret its value. BTU

MATLAB: An Introduction with Applications
MATLAB: An Introduction with Applications
6th Edition
ISBN:9781119256830
Author:Amos Gilat
Publisher:Amos Gilat
Chapter1: Starting With Matlab
Section: Chapter Questions
Problem 1P
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I need help with b and c, but I would also like to check if my answer for a is right (if you can include it)? Thank you!

 

 

4. Use Minitah 11.118 Energy efficiency of buildings. Firms conscious of the energy efficiency of proposed new structures are interested in the relation between yearly energy consumption and the num- ber of square feet of building shell. The table (next page) lists the energy consumption in British thermal units (a BTU is the amount of heat required to raise 1 pound of wa- ter 1°F) for 22 buildings that were all subjected to the same climatic conditions. Consider a straight-line model relating BTU consumption, y, to building shell area, x. a. Find the least squares estimates of the intercept Bo and the slope B1. b. Investigate the usefulness of the model you developed in part a. Is yearly energy consumption positively lin- carly related to the shell area of the building? Test using a = .10. e. Find the observed significance level of the test of part b. Interpret its value. BTU
Transcribed Image Text:4. Use Minitah 11.118 Energy efficiency of buildings. Firms conscious of the energy efficiency of proposed new structures are interested in the relation between yearly energy consumption and the num- ber of square feet of building shell. The table (next page) lists the energy consumption in British thermal units (a BTU is the amount of heat required to raise 1 pound of wa- ter 1°F) for 22 buildings that were all subjected to the same climatic conditions. Consider a straight-line model relating BTU consumption, y, to building shell area, x. a. Find the least squares estimates of the intercept Bo and the slope B1. b. Investigate the usefulness of the model you developed in part a. Is yearly energy consumption positively lin- carly related to the shell area of the building? Test using a = .10. e. Find the observed significance level of the test of part b. Interpret its value. BTU
BTU Area 3870000 30001 1371000 13530 2422000 26060 672200 6355 233100 4576 218900 24680 354000 2621 3135000 23350 1470000 18770 1408000 12220 2201000 25490 2680000 23680 337500 5650 567500 8001 555300 6147 239400 2660 2629000 19240 1102000 10700 423500 9125 423500 6510 1691000 13530 1870000 18860
Transcribed Image Text:BTU Area 3870000 30001 1371000 13530 2422000 26060 672200 6355 233100 4576 218900 24680 354000 2621 3135000 23350 1470000 18770 1408000 12220 2201000 25490 2680000 23680 337500 5650 567500 8001 555300 6147 239400 2660 2629000 19240 1102000 10700 423500 9125 423500 6510 1691000 13530 1870000 18860
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