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=91.8-8.46X

.

Predictor Coef SE Coef T P

Constant 91.837 4.659 19.71 0.000

X -8.4614 0.9873 -8.57 0.000

Sample slope:

p-value: