A highway employee performed a regression analysis of the relationship between the number of construction work-zone fatalities and the number of unemployed people in a state. The regression equation is Fatalities 5 12.7 1 0.000114 (Unemp). Some additional output is:

a. How many states were in the sample?
b. Determine the standard error of estimate.
c. Determine the coefficient of determination.
d. Determine the correlation coefficient.
e. At the .05 significance level, does the evidence suggest there is a positive association between fatalities and the numberunemployed?

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Predictor Constant Unemp Coef 12.726 0.00011386 SE Coef 8.115 0.00002896 1.57 3.93 0.134 0.001 Analysis of Variance Source Regression Regidual Error18 Total DF 1 10354 12054 19 22408 MS 10354 670 15.46 0.001