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# Confidence interval estimation for regression coefficients

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1 What is the R^2 Value for your regression equation?

2 What is the value of the coefficient of Blue Collar in your equation?

3 What is the lower limit of the 95% CI for this coefficient?

4 What is the upper limit of the 95% CI for this coefficient?

5 Interpret the 95% confidence interval for the B1 parameter

6 What is the p-value for your ANOVA test?

7 Interpret your ANOVA table - does the explanatory variable provide

8 Interpret your ANOVA table - does the explanatory variable provide
at least some power in estimating the dependent variable?

9 What is the relationship between the t-ratio for the estimated
coefficient of the explanatory variable and the F-ratio in the ANOVA
section of the output?

10 Do these two test statistic values provide the same indication
regarding a possiible relationship between yearly changes in the
wages and salaries of white-collar and blue-collar workers?
Explain why or why not.