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Figure 4.21 Rejection region for the F-test Ho: b4 = b5 = 0

Figure 4.21 Rejection region for the F-test Ho: b4 = b5 = 0

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Figure 4.22 SAS output for
complete model, Example 4.11

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Figure 4.23 SAS output for
reduced model, Example 4.11

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Section 4.14
A Complete
Example

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Figure 4.24 SAS output for complete
second-order model for road cost

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Figure 4.25 SAS output for
reduced model for road cost

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Figure 4.26 Plot of the least
squares lines for the reduced model

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Figure 4.27 SAS output showing
prediction intervals for reduced model

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