Chapter 9, Section 1, Exercise 005

Computer output for fitting a simple linear model is given below. State the value of the sample slope for the given model. In testing if the slope in the population is different from zero, identify thep

-value and use it (and a5%

significance level) to make a clear conclusion about the effectiveness of the model.

The regression equation isY=89.2-7.19X

.

PredictorCoefSE CoefTPConstant89.242

4.528

19.71

0.000

X

-7.1858

0.8385

-8.57

0.000

Sample slope:

p

-value:

Is the model effective?

Yes

No