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 the P value and use it (and a 5% significance level) to make a clear conclusion about the effectiveness of the model.
The regression equation is Y 87.7 - 9.03X
Predictor Coef SE Coef T P
Constant 87.692 4.449 19.71 0.000
X -9.0298 1.0537 -8.57 0.000
Sample slope:
P value:
Is the model effective?
yes or no