A consumer buying cooperative tested the effective heating area of 20 different electric space heaters with different wattages. Here are the results. a. Compute the correlation between the wattage and heating area. Is there a direct or an indirect relationship? b. Conduct a test of hypothesis to determine if it is reasonable that the coefficient is greater than zero. Use the .05 significance level. c. Develop the regression equation for effective heating based on wattage. d. Which heater looks like the “best buy” based on the size of the residual?
A consumer buying cooperative tested the effective heating area of 20 different electric space heaters with different wattages. Here are the results. a. Compute the correlation between the wattage and heating area. Is there a direct or an indirect relationship? b. Conduct a test of hypothesis to determine if it is reasonable that the coefficient is greater than zero. Use the .05 significance level. c. Develop the regression equation for effective heating based on wattage. d. Which heater looks like the “best buy” based on the size of the residual?
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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Question
A consumer buying cooperative tested the effective heating area of 20 different
electric space heaters with different wattages. Here are the results.
a. Compute the
an indirect relationship?
b. Conduct a test of hypothesis to determine if it is reasonable that the coefficient is
greater than zero. Use the .05 significance level.
c. Develop the regression equation for effective heating based on wattage.
d. Which heater looks like the “best buy” based on the size of the residual?
Transcribed Image Text:Heater
1
2
3
4
5
6
7
8
9
10
Wattage
1,500
750
1,500
1,250
1,250
1,250
1,000
2,000
1,000
1,500
Area
205
70
199
151
181
217
94
298
135
211
Heater
11
12
13
14
15
16
17
18
19
20
Wattage
1,250
500
500
1,500
2,000
1,500
750
1,500
1,250
500
Area
116
72
82
206
245
219
63
200
151
44
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