Chapter 9, Section 1, Exercise 008 Computer output for fitting a simple linear m

Question

Chapter 9, Section 1, Exercise 008 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. Coefficients: Estimate Std.Error t value Pr(> ) Intercept) 824.14 88.62 9.30 0.000 -3.786 1241 -3.05 0.006 Sample slope p-value: Is the model effective?

Explanation / Answer

here as value is estimate of slope

threfore sample slope =-3.786

p value =0.006

as p value is less then 0.05 level of significance threefore model is effective,

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