Complete the following worksheet and then use it to calculate the coefficient of determination. (9,- y)² 2.208 565.203 432.765 79.477 797.046 178.837 973.690 1,856.834 2,121.800 35.331 Yi ŷ 1 15 160 175.486 2 13.5 220 197.774 3 16.5 140 153.197 4 14.5 190 182.915 5 17 120 145.768 6 16 160 160.627 7 13 200 205.204 8 18 150 130.909 9 12 210 220.063 10 15.5 190 168.056 Total The coefficient of determination (²) is (3k - y)² 196.000 2,116.000 1,156.000 256.000 2,916.000 196.000 676.000 576.000 1,296.000 256.000 According to the regression model, which of the following is the best estimate together with the 95 percent prediction interval of paint sales (in housands of gallons) in a sales region where the selling price is $12.50? 212.620 + 2(3.190) 409.370 2(3.190) 212.620 2(18.017) 409.370 + 2(18.017) What is the price elasticity of demand at a selling price of $12.50?
Complete the following worksheet and then use it to calculate the coefficient of determination. (9,- y)² 2.208 565.203 432.765 79.477 797.046 178.837 973.690 1,856.834 2,121.800 35.331 Yi ŷ 1 15 160 175.486 2 13.5 220 197.774 3 16.5 140 153.197 4 14.5 190 182.915 5 17 120 145.768 6 16 160 160.627 7 13 200 205.204 8 18 150 130.909 9 12 210 220.063 10 15.5 190 168.056 Total The coefficient of determination (²) is (3k - y)² 196.000 2,116.000 1,156.000 256.000 2,916.000 196.000 676.000 576.000 1,296.000 256.000 According to the regression model, which of the following is the best estimate together with the 95 percent prediction interval of paint sales (in housands of gallons) in a sales region where the selling price is $12.50? 212.620 + 2(3.190) 409.370 2(3.190) 212.620 2(18.017) 409.370 + 2(18.017) What is the price elasticity of demand at a selling price of $12.50?
College Algebra (MindTap Course List)
12th Edition
ISBN:9781305652231
Author:R. David Gustafson, Jeff Hughes
Publisher:R. David Gustafson, Jeff Hughes
Chapter4: Polynomial And Rational Functions
Section4.6: Rational Functions
Problem 11SC: Find the mean hourly cost when the cell phone described above is used for 240 minutes.
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Transcribed Image Text:Complete the following worksheet and then use it to calculate the coefficient of determination.
(ŷ; - y)²
(Yi - y)²
2.208
196.000
565.203
2,116.000
432.765
1,156.000
79.477
256.000
797.046
2,916.000
178.837
196.000
973.690
676.000
1,856.834
576.000
2,121.800
1,296.000
35.331
256.000
i
1
2
3
4
5
6
7
8
9
Ti
Yi
y
15 160
175.486
13.5 220
197.774
16.5 140 153.197
14.5 190 182.915
17 120
145.768
16
160 160.627
13
200 205.204
18 150 130.909
12 210 220.063
10 15.5 190 168.056
Total
The coefficient of determination (²) is
According to the regression model, which of the following is the best estimate together with the 95 percent prediction interval of paint sales (in
thousands of gallons) in a sales region where the selling price is $12.50?
O 212.620 + 2(3.190)
O 409.370 + 2(3.190)
O212.620 2(18.017)
O 409.370 = 2(18.017)
What is the price elasticity of demand at a selling price of $12.50?
O -0.56
-0.06
O -0.87
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