The variables are xacid extractable cations and

Info iconThis preview shows page 1. Sign up to view the full content.

View Full Document Right Arrow Icon
This is the end of the preview. Sign up to access the rest of the document.

Unformatted text preview: tions and y=exchangeable acidity/total cation exchange capacity. Fitting the regression function ̂ Note that n=12. Parameter ̂ ̂ Estimate (Coef) 0.8733 -0.3255 0.0448 ̂ yielded the accompanying computer output. Estimated standard deviation (SE Coef) 0.0421( ̂ 0.0316( ̂ 0.0319( ̂ a. Estimate the predicted response at x=0.001859. Answer) ̂ ̂ ̂ ,̂ ̂ ,̂ ̂ (cf. Example 13.7) b. Carry out a test to decide whether the quadratic term should be retained in the model at 0.05 level. Answer) The null hypothesis, The alternative hypothesis, The test statistic, ̂ ̂ The critical value, At significance level .05, we fail to reject the null hypothesis because the quadratic term should not be retained. (cf. Example 13.9) 4 of 7 . Therefore, IOE 366 Fall 2012 Practice c. Suppose that SST = 1.456923 and SSE =0.117521. Write down the null...
View Full Document

This note was uploaded on 04/04/2013 for the course IOE 366 taught by Professor Game during the Winter '08 term at University of Michigan.

Ask a homework question - tutors are online