An article in the Tappi Journal (March, 1986) presented data on green liquor Na2S concentration (in grams per liter) that is affected by paper machine production (in tons per day). 20. Test the significance of the intercept. a. The intercept is significant. b. The intercept is not significant. c. Cannot be determined due to insufficiency of data.

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20. Using the given Minitab output, answer the questions that follow. 

Regression Equation
C1 = 11.7 + 0.0386 C2
Coefficients
Term
Coef SE Coef
97% CI
T-Value P-Value VIF
Constant
11.7
14.4
(-26.2, 49.5)
0.81
0.440
C2
0.0386
0.0157 (-0.0029, 0.0800)
2.45
0.040 1.00
Model Summary
S
R-sq R-sq(adj)
PRESS R-sq(pred) AICC
BIC
2.89815 42.86%
35.72% 102.435
12.90% 57.43 54.34
Analysis of Variance
Source
DF Seq SS Contribution Adj SS Adj MS F-Value P-Value
Regression
C2
1
50.41
42.86%
50.41
50.406
6.00
0.040
1
50.41
42.86%
50.41
50.406
6.00
0.040
Error
8
67.19
57.14%
67.19
8.399
Lack-of-Fit
7
54.69
46.51%
54.69
7.813
0.63
0.754
Pure Error
1
12.50
10.63%
12.50
12.500
Total
9.
117.60
100.00%
Transcribed Image Text:Regression Equation C1 = 11.7 + 0.0386 C2 Coefficients Term Coef SE Coef 97% CI T-Value P-Value VIF Constant 11.7 14.4 (-26.2, 49.5) 0.81 0.440 C2 0.0386 0.0157 (-0.0029, 0.0800) 2.45 0.040 1.00 Model Summary S R-sq R-sq(adj) PRESS R-sq(pred) AICC BIC 2.89815 42.86% 35.72% 102.435 12.90% 57.43 54.34 Analysis of Variance Source DF Seq SS Contribution Adj SS Adj MS F-Value P-Value Regression C2 1 50.41 42.86% 50.41 50.406 6.00 0.040 1 50.41 42.86% 50.41 50.406 6.00 0.040 Error 8 67.19 57.14% 67.19 8.399 Lack-of-Fit 7 54.69 46.51% 54.69 7.813 0.63 0.754 Pure Error 1 12.50 10.63% 12.50 12.500 Total 9. 117.60 100.00%
An article in the Tappi Journal (March, 1986) presented data on green liquor Na2S concentration (in grams per liter) that is affected by paper machine
production (in tons per day).
20. Test the significance of the intercept.
a. The intercept is significant.
b. The intercept is not significant.
c. Cannot be determined due to insufficiency of data.
Transcribed Image Text:An article in the Tappi Journal (March, 1986) presented data on green liquor Na2S concentration (in grams per liter) that is affected by paper machine production (in tons per day). 20. Test the significance of the intercept. a. The intercept is significant. b. The intercept is not significant. c. Cannot be determined due to insufficiency of data.
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