Current Attempt in Progress Computer output for fitting a simple linear model is given below. State the value of the sample slope for the given model. In testing 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 = 88.9 - 8.74X. Predictor Coef SE Coef T P Constant 88.906 4.511 19.71 0.000 X -8.7394 1.0198 -8.57 0.000 Sample slope: i p-value: i Is the model effective