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Question
Find the sample slope for the given model. In testing if the slope in the population is different from zero, find 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=80.7-0.0128X.
Predictor Coef SE Coef T P
Constant 80.72 11.58 6.97 0.000
X -0.01278 0.01065 -1.20 0.245
Sample slope:
p-value:
Is the model effective?
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