2.890 A consumer buying cooperative tested the effective heating area of 20 different electric space heaters with different wattages. Here are the results. Wattage 1,750 1,000 1,250 750 Heater Area 1. 225 234 281 208 4 1,750 1,250 1,250 1,750 1,500 1.258 1.75e 90 213 7. 158 216 255 1,250 1,250 1,750 2,000 1,500 2,000 1,000 1,500 10 220 108 208 11 12 13 89 14 266 15 262 16 61 17 166 18 750 284 1,250 600 19 199 20 50 PpictureClick here for the Excel Data File a. Compute the correlation between the wattage and heating area. Is there a direct or an Indirect relationship? (Round your answer to 4 decimal places.) The correlation of Wattage and Area is The relationship is b. Conduct a test of hypothesis to determine if It is reasonable that the coefficlent Is greater than zero. Use the 0.100 significance level. (Round Intermedlate calculations and flnal answer to 3 decimal places.)
2.890 A consumer buying cooperative tested the effective heating area of 20 different electric space heaters with different wattages. Here are the results. Wattage 1,750 1,000 1,250 750 Heater Area 1. 225 234 281 208 4 1,750 1,250 1,250 1,750 1,500 1.258 1.75e 90 213 7. 158 216 255 1,250 1,250 1,750 2,000 1,500 2,000 1,000 1,500 10 220 108 208 11 12 13 89 14 266 15 262 16 61 17 166 18 750 284 1,250 600 19 199 20 50 PpictureClick here for the Excel Data File a. Compute the correlation between the wattage and heating area. Is there a direct or an Indirect relationship? (Round your answer to 4 decimal places.) The correlation of Wattage and Area is The relationship is b. Conduct a test of hypothesis to determine if It is reasonable that the coefficlent Is greater than zero. Use the 0.100 significance level. (Round Intermedlate calculations and flnal answer to 3 decimal places.)
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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Transcribed Image Text:A consumer buying cooperative tested the effective heating area of 20 different electric space heaters with different wattages. Here
are the results.
Heater
wattage
1,750
1,000
Area
1
225
234
1,250
281
4
750
208
1,750
1, 250
1.258
90
213
7.
1,250
1.758
158
1,750
1.509
216
6.
1,500
1,250
1.250
255
10
220
11
1,250
1750
108
12
1,750
208
13
2,000
1,500
2,000
1,000
1,500
89
14
266
15
262
16
61
17
166
18
750
284
19
1, 250
199
20
600
50
2plctureClick here for the Excel Data File
a. Compute the correlation between the wattage and heating area. Is there a direct or an Indırect relationship? (Round your answer to
4 decimal places.)
The correlation of Wattage and Area is
The relationship is
b. Conduct a test of hypothesis to determine If It is reasonable that the coefficlent Is greater than zero. Use the 0.100 significance level.
(Round Intermedlate calculations and final answer to 3 decimal places.)
t =
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Transcribed Image Text:c. Develop the regresslon equation for effective heating based on wattage. (Negatlve value should be Indicated by a minus sign.
Round your answers to 4 decimal places.)
The regression equation is:
d. What heating area corresponds with a 1,500-watt heater? (Round your answers to 4 decimal places.)
Heating area
e. What Is the 95% confidence Interval of heating the area if the wattage Is 1,500? (Round your answers to 4 decimal places.)
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